diff --git a/src/main/scala/com.snowplowanalytics.snowplow.analytics.scalasdk/SnowplowEvent.scala b/src/main/scala/com.snowplowanalytics.snowplow.analytics.scalasdk/SnowplowEvent.scala
index 65766a4..9728d0b 100644
--- a/src/main/scala/com.snowplowanalytics.snowplow.analytics.scalasdk/SnowplowEvent.scala
+++ b/src/main/scala/com.snowplowanalytics.snowplow.analytics.scalasdk/SnowplowEvent.scala
@@ -14,7 +14,12 @@ package com.snowplowanalytics.snowplow.analytics.scalasdk
 
 // circe
 import io.circe.syntax._
-import io.circe.{Encoder, Json, JsonObject}
+import io.circe.generic.semiauto.deriveDecoder
+import io.circe.{Encoder, Json, JsonObject, Decoder, DecodingFailure}
+import io.circe.java8._
+import io.circe.CursorOp.DownField
+//cats
+import cats.implicits._
 
 // iglu
 import com.snowplowanalytics.iglu.core.circe.CirceIgluCodecs._
@@ -61,6 +66,10 @@ object SnowplowEvent {
       ).asJson
     }
 
+  implicit val contextsDecoder = deriveDecoder[Contexts].recover {
+    case DecodingFailure(_, List(DownField("data"), DownField(_))) => Contexts(List())
+  }
+
   implicit final val unstructCirceEncoder: Encoder[UnstructEvent] =
     Encoder.instance { unstructEvent: UnstructEvent =>
       if (unstructEvent.data.isEmpty) Json.Null
@@ -70,6 +79,12 @@ object SnowplowEvent {
       ).asJson
     }
 
+  implicit val unstructEventDecoder = deriveDecoder[UnstructEvent].recover {
+    case DecodingFailure(_, List(DownField("data"), DownField(_))) => UnstructEvent(None)
+  }
+
+  implicit val eventDecoder: Decoder[Event] = deriveDecoder[Event]
+
   /**
     * @param shredProperty Type of self-describing entity
     * @param vendor        Iglu schema vendor
diff --git a/src/test/scala/com.snowplowanalytics.snowplow.analytics.scalasdk/EventSpec.scala b/src/test/scala/com.snowplowanalytics.snowplow.analytics.scalasdk/EventSpec.scala
index e024a0d..9fc4b0a 100644
--- a/src/test/scala/com.snowplowanalytics.snowplow.analytics.scalasdk/EventSpec.scala
+++ b/src/test/scala/com.snowplowanalytics.snowplow.analytics.scalasdk/EventSpec.scala
@@ -33,7 +33,7 @@ import org.specs2.mutable.Specification
 import com.snowplowanalytics.iglu.core.{SchemaKey, SchemaVer, SelfDescribingData}
 
 // This library
-import com.snowplowanalytics.snowplow.analytics.scalasdk.SnowplowEvent.{Contexts, UnstructEvent}
+import com.snowplowanalytics.snowplow.analytics.scalasdk.SnowplowEvent._
 
 /**
   * Tests Event case class
@@ -2004,6 +2004,739 @@ class EventSpec extends Specification {
         "Cannot parse key 'true_tstamp with value VALUE IS MISSING into datetime"
       ))
     }
+
+    "successfully decode encoded event which has no contexts or unstruct_event" in {
+      val event = Event(
+        app_id = Some("angry-birds"),
+        platform = Some("web"),
+        etl_tstamp = Some(Instant.parse("2017-01-26T00:01:25.292Z")),
+        collector_tstamp = Instant.parse("2013-11-26T00:02:05Z"),
+        dvce_created_tstamp = Some(Instant.parse("2013-11-26T00:03:57.885Z")),
+        event = Some("page_view"),
+        event_id = UUID.fromString("c6ef3124-b53a-4b13-a233-0088f79dcbcb"),
+        txn_id = Some(41828),
+        name_tracker = Some("cloudfront-1"),
+        v_tracker = Some("js-2.1.0"),
+        v_collector = "clj-tomcat-0.1.0",
+        v_etl = "serde-0.5.2",
+        user_id = Some("jon.doe@email.com"),
+        user_ipaddress = Some("92.231.54.234"),
+        user_fingerprint = Some("2161814971"),
+        domain_userid = Some("bc2e92ec6c204a14"),
+        domain_sessionidx = Some(3),
+        network_userid = Some("ecdff4d0-9175-40ac-a8bb-325c49733607"),
+        geo_country = Some("US"),
+        geo_region = Some("TX"),
+        geo_city = Some("New York"),
+        geo_zipcode = Some("94109"),
+        geo_latitude = Some(37.443604),
+        geo_longitude = Some(-122.4124),
+        geo_region_name = Some("Florida"),
+        ip_isp = Some("FDN Communications"),
+        ip_organization = Some("Bouygues Telecom"),
+        ip_domain = Some("nuvox.net"),
+        ip_netspeed = Some("Cable/DSL"),
+        page_url = Some("http://www.snowplowanalytics.com"),
+        page_title = Some("On Analytics"),
+        page_referrer = None,
+        page_urlscheme = Some("http"),
+        page_urlhost = Some("www.snowplowanalytics.com"),
+        page_urlport = Some(80),
+        page_urlpath = Some("/product/index.html"),
+        page_urlquery = Some("id=GTM-DLRG"),
+        page_urlfragment = Some("4-conclusion"),
+        refr_urlscheme = None,
+        refr_urlhost = None,
+        refr_urlport = None,
+        refr_urlpath = None,
+        refr_urlquery = None,
+        refr_urlfragment = None,
+        refr_medium = None,
+        refr_source = None,
+        refr_term = None,
+        mkt_medium = None,
+        mkt_source = None,
+        mkt_term = None,
+        mkt_content = None,
+        mkt_campaign = None,
+        contexts = Contexts(List()),
+        se_category = None,
+        se_action = None,
+        se_label = None,
+        se_property = None,
+        se_value = None,
+        unstruct_event = UnstructEvent(None),
+        tr_orderid = None,
+        tr_affiliation = None,
+        tr_total = None,
+        tr_tax = None,
+        tr_shipping = None,
+        tr_city = None,
+        tr_state = None,
+        tr_country = None,
+        ti_orderid = None,
+        ti_sku = None,
+        ti_name = None,
+        ti_category = None,
+        ti_price = None,
+        ti_quantity = None,
+        pp_xoffset_min = None,
+        pp_xoffset_max = None,
+        pp_yoffset_min = None,
+        pp_yoffset_max = None,
+        useragent = None,
+        br_name = None,
+        br_family = None,
+        br_version = None,
+        br_type = None,
+        br_renderengine = None,
+        br_lang = None,
+        br_features_pdf = Some(true),
+        br_features_flash = Some(false),
+        br_features_java = None,
+        br_features_director = None,
+        br_features_quicktime = None,
+        br_features_realplayer = None,
+        br_features_windowsmedia = None,
+        br_features_gears = None,
+        br_features_silverlight = None,
+        br_cookies = None,
+        br_colordepth = None,
+        br_viewwidth = None,
+        br_viewheight = None,
+        os_name = None,
+        os_family = None,
+        os_manufacturer = None,
+        os_timezone = None,
+        dvce_type = None,
+        dvce_ismobile = None,
+        dvce_screenwidth = None,
+        dvce_screenheight = None,
+        doc_charset = None,
+        doc_width = None,
+        doc_height = None,
+        tr_currency = None,
+        tr_total_base = None,
+        tr_tax_base = None,
+        tr_shipping_base = None,
+        ti_currency = None,
+        ti_price_base = None,
+        base_currency = None,
+        geo_timezone = None,
+        mkt_clickid = None,
+        mkt_network = None,
+        etl_tags = None,
+        dvce_sent_tstamp = None,
+        refr_domain_userid = None,
+        refr_dvce_tstamp = None,
+        derived_contexts = Contexts(List()),
+        domain_sessionid = Some("2b15e5c8-d3b1-11e4-b9d6-1681e6b88ec1"),
+        derived_tstamp = Some(Instant.parse("2013-11-26T00:03:57.886Z")),
+        event_vendor = Some("com.snowplowanalytics.snowplow"),
+        event_name = Some("link_click"),
+        event_format = Some("jsonschema"),
+        event_version = Some("1-0-0"),
+        event_fingerprint = Some("e3dbfa9cca0412c3d4052863cefb547f"),
+        true_tstamp = Some(Instant.parse("2013-11-26T00:03:57.886Z"))
+      )
+      val eventJson = event.toJson(false)
+      eventJson.as[Event] must beRight(event)
+    }
+
+
+    "successfully decode encoded event which has contexts but has no unstruct_event" in {
+      val event = Event(
+        app_id = Some("angry-birds"),
+        platform = Some("web"),
+        etl_tstamp = Some(Instant.parse("2017-01-26T00:01:25.292Z")),
+        collector_tstamp = Instant.parse("2013-11-26T00:02:05Z"),
+        dvce_created_tstamp = Some(Instant.parse("2013-11-26T00:03:57.885Z")),
+        event = Some("page_view"),
+        event_id = UUID.fromString("c6ef3124-b53a-4b13-a233-0088f79dcbcb"),
+        txn_id = Some(41828),
+        name_tracker = Some("cloudfront-1"),
+        v_tracker = Some("js-2.1.0"),
+        v_collector = "clj-tomcat-0.1.0",
+        v_etl = "serde-0.5.2",
+        user_id = Some("jon.doe@email.com"),
+        user_ipaddress = Some("92.231.54.234"),
+        user_fingerprint = Some("2161814971"),
+        domain_userid = Some("bc2e92ec6c204a14"),
+        domain_sessionidx = Some(3),
+        network_userid = Some("ecdff4d0-9175-40ac-a8bb-325c49733607"),
+        geo_country = Some("US"),
+        geo_region = Some("TX"),
+        geo_city = Some("New York"),
+        geo_zipcode = Some("94109"),
+        geo_latitude = Some(37.443604),
+        geo_longitude = Some(-122.4124),
+        geo_region_name = Some("Florida"),
+        ip_isp = Some("FDN Communications"),
+        ip_organization = Some("Bouygues Telecom"),
+        ip_domain = Some("nuvox.net"),
+        ip_netspeed = Some("Cable/DSL"),
+        page_url = Some("http://www.snowplowanalytics.com"),
+        page_title = Some("On Analytics"),
+        page_referrer = None,
+        page_urlscheme = Some("http"),
+        page_urlhost = Some("www.snowplowanalytics.com"),
+        page_urlport = Some(80),
+        page_urlpath = Some("/product/index.html"),
+        page_urlquery = Some("id=GTM-DLRG"),
+        page_urlfragment = Some("4-conclusion"),
+        refr_urlscheme = None,
+        refr_urlhost = None,
+        refr_urlport = None,
+        refr_urlpath = None,
+        refr_urlquery = None,
+        refr_urlfragment = None,
+        refr_medium = None,
+        refr_source = None,
+        refr_term = None,
+        mkt_medium = None,
+        mkt_source = None,
+        mkt_term = None,
+        mkt_content = None,
+        mkt_campaign = None,
+        contexts = Contexts(
+          List(
+            SelfDescribingData(
+              SchemaKey(
+                "org.schema",
+                "WebPage",
+                "jsonschema",
+                SchemaVer.Full(1, 0, 0)
+              ),
+              JsonObject(
+                ("genre", "blog".asJson),
+                ("inLanguage", "en-US".asJson),
+                ("datePublished", "2014-11-06T00:00:00Z".asJson),
+                ("author", "Fred Blundun".asJson),
+                ("breadcrumb", List("blog", "releases").asJson),
+                ("keywords", List("snowplow", "javascript", "tracker", "event").asJson)
+              ).asJson
+            ),
+            SelfDescribingData(
+              SchemaKey(
+                "org.w3",
+                "PerformanceTiming",
+                "jsonschema",
+                SchemaVer.Full(1, 0, 0)
+              ),
+              JsonObject(
+                ("navigationStart", 1415358089861L.asJson),
+                ("unloadEventStart", 1415358090270L.asJson),
+                ("unloadEventEnd", 1415358090287L.asJson),
+                ("redirectStart", 0.asJson),
+                ("redirectEnd", 0.asJson),
+                ("fetchStart", 1415358089870L.asJson),
+                ("domainLookupStart", 1415358090102L.asJson),
+                ("domainLookupEnd", 1415358090102L.asJson),
+                ("connectStart", 1415358090103L.asJson),
+                ("connectEnd", 1415358090183L.asJson),
+                ("requestStart", 1415358090183L.asJson),
+                ("responseStart", 1415358090265L.asJson),
+                ("responseEnd", 1415358090265L.asJson),
+                ("domLoading", 1415358090270L.asJson),
+                ("domInteractive", 1415358090886L.asJson),
+                ("domContentLoadedEventStart", 1415358090968L.asJson),
+                ("domContentLoadedEventEnd", 1415358091309L.asJson),
+                ("domComplete", 0.asJson),
+                ("loadEventStart", 0.asJson),
+                ("loadEventEnd", 0.asJson)
+              ).asJson
+            )
+          )
+        ),
+        se_category = None,
+        se_action = None,
+        se_label = None,
+        se_property = None,
+        se_value = None,
+        unstruct_event = UnstructEvent(None),
+        tr_orderid = None,
+        tr_affiliation = None,
+        tr_total = None,
+        tr_tax = None,
+        tr_shipping = None,
+        tr_city = None,
+        tr_state = None,
+        tr_country = None,
+        ti_orderid = None,
+        ti_sku = None,
+        ti_name = None,
+        ti_category = None,
+        ti_price = None,
+        ti_quantity = None,
+        pp_xoffset_min = None,
+        pp_xoffset_max = None,
+        pp_yoffset_min = None,
+        pp_yoffset_max = None,
+        useragent = None,
+        br_name = None,
+        br_family = None,
+        br_version = None,
+        br_type = None,
+        br_renderengine = None,
+        br_lang = None,
+        br_features_pdf = Some(true),
+        br_features_flash = Some(false),
+        br_features_java = None,
+        br_features_director = None,
+        br_features_quicktime = None,
+        br_features_realplayer = None,
+        br_features_windowsmedia = None,
+        br_features_gears = None,
+        br_features_silverlight = None,
+        br_cookies = None,
+        br_colordepth = None,
+        br_viewwidth = None,
+        br_viewheight = None,
+        os_name = None,
+        os_family = None,
+        os_manufacturer = None,
+        os_timezone = None,
+        dvce_type = None,
+        dvce_ismobile = None,
+        dvce_screenwidth = None,
+        dvce_screenheight = None,
+        doc_charset = None,
+        doc_width = None,
+        doc_height = None,
+        tr_currency = None,
+        tr_total_base = None,
+        tr_tax_base = None,
+        tr_shipping_base = None,
+        ti_currency = None,
+        ti_price_base = None,
+        base_currency = None,
+        geo_timezone = None,
+        mkt_clickid = None,
+        mkt_network = None,
+        etl_tags = None,
+        dvce_sent_tstamp = None,
+        refr_domain_userid = None,
+        refr_dvce_tstamp = None,
+        derived_contexts = Contexts(
+          List(
+            SelfDescribingData(
+              SchemaKey(
+                "com.snowplowanalytics.snowplow",
+                "ua_parser_context",
+                "jsonschema",
+                SchemaVer.Full(1, 0, 0)
+              ),
+              JsonObject(
+                ("useragentFamily", "IE".asJson),
+                ("useragentMajor", "7".asJson),
+                ("useragentMinor", "0".asJson),
+                ("useragentPatch", Json.Null),
+                ("useragentVersion", "IE 7.0".asJson),
+                ("osFamily", "Windows XP".asJson),
+                ("osMajor", Json.Null),
+                ("osMinor", Json.Null),
+                ("osPatch", Json.Null),
+                ("osPatchMinor", Json.Null),
+                ("osVersion", "Windows XP".asJson),
+                ("deviceFamily", "Other".asJson)
+              ).asJson
+            )
+          )
+        ),
+        domain_sessionid = Some("2b15e5c8-d3b1-11e4-b9d6-1681e6b88ec1"),
+        derived_tstamp = Some(Instant.parse("2013-11-26T00:03:57.886Z")),
+        event_vendor = Some("com.snowplowanalytics.snowplow"),
+        event_name = Some("link_click"),
+        event_format = Some("jsonschema"),
+        event_version = Some("1-0-0"),
+        event_fingerprint = Some("e3dbfa9cca0412c3d4052863cefb547f"),
+        true_tstamp = Some(Instant.parse("2013-11-26T00:03:57.886Z"))
+      )
+      val eventJson = event.toJson(false)
+      eventJson.as[Event] must beRight(event)
+    }
+
+    "successfully decode encoded event which has unstruct_event but has no contexts" in {
+      val event = Event(
+        app_id = Some("angry-birds"),
+        platform = Some("web"),
+        etl_tstamp = Some(Instant.parse("2017-01-26T00:01:25.292Z")),
+        collector_tstamp = Instant.parse("2013-11-26T00:02:05Z"),
+        dvce_created_tstamp = Some(Instant.parse("2013-11-26T00:03:57.885Z")),
+        event = Some("page_view"),
+        event_id = UUID.fromString("c6ef3124-b53a-4b13-a233-0088f79dcbcb"),
+        txn_id = Some(41828),
+        name_tracker = Some("cloudfront-1"),
+        v_tracker = Some("js-2.1.0"),
+        v_collector = "clj-tomcat-0.1.0",
+        v_etl = "serde-0.5.2",
+        user_id = Some("jon.doe@email.com"),
+        user_ipaddress = Some("92.231.54.234"),
+        user_fingerprint = Some("2161814971"),
+        domain_userid = Some("bc2e92ec6c204a14"),
+        domain_sessionidx = Some(3),
+        network_userid = Some("ecdff4d0-9175-40ac-a8bb-325c49733607"),
+        geo_country = Some("US"),
+        geo_region = Some("TX"),
+        geo_city = Some("New York"),
+        geo_zipcode = Some("94109"),
+        geo_latitude = Some(37.443604),
+        geo_longitude = Some(-122.4124),
+        geo_region_name = Some("Florida"),
+        ip_isp = Some("FDN Communications"),
+        ip_organization = Some("Bouygues Telecom"),
+        ip_domain = Some("nuvox.net"),
+        ip_netspeed = Some("Cable/DSL"),
+        page_url = Some("http://www.snowplowanalytics.com"),
+        page_title = Some("On Analytics"),
+        page_referrer = None,
+        page_urlscheme = Some("http"),
+        page_urlhost = Some("www.snowplowanalytics.com"),
+        page_urlport = Some(80),
+        page_urlpath = Some("/product/index.html"),
+        page_urlquery = Some("id=GTM-DLRG"),
+        page_urlfragment = Some("4-conclusion"),
+        refr_urlscheme = None,
+        refr_urlhost = None,
+        refr_urlport = None,
+        refr_urlpath = None,
+        refr_urlquery = None,
+        refr_urlfragment = None,
+        refr_medium = None,
+        refr_source = None,
+        refr_term = None,
+        mkt_medium = None,
+        mkt_source = None,
+        mkt_term = None,
+        mkt_content = None,
+        mkt_campaign = None,
+        contexts = Contexts(List()),
+        se_category = None,
+        se_action = None,
+        se_label = None,
+        se_property = None,
+        se_value = None,
+        unstruct_event = UnstructEvent(
+          Some(
+            SelfDescribingData(
+              SchemaKey(
+                "com.snowplowanalytics.snowplow",
+                "link_click",
+                "jsonschema",
+                SchemaVer.Full(1, 0, 1)
+              ),
+              JsonObject(
+                ("targetUrl", "http://www.example.com".asJson),
+                ("elementClasses", List("foreground").asJson),
+                ("elementId", "exampleLink".asJson)
+              ).asJson
+            )
+          )
+        ),
+        tr_orderid = None,
+        tr_affiliation = None,
+        tr_total = None,
+        tr_tax = None,
+        tr_shipping = None,
+        tr_city = None,
+        tr_state = None,
+        tr_country = None,
+        ti_orderid = None,
+        ti_sku = None,
+        ti_name = None,
+        ti_category = None,
+        ti_price = None,
+        ti_quantity = None,
+        pp_xoffset_min = None,
+        pp_xoffset_max = None,
+        pp_yoffset_min = None,
+        pp_yoffset_max = None,
+        useragent = None,
+        br_name = None,
+        br_family = None,
+        br_version = None,
+        br_type = None,
+        br_renderengine = None,
+        br_lang = None,
+        br_features_pdf = Some(true),
+        br_features_flash = Some(false),
+        br_features_java = None,
+        br_features_director = None,
+        br_features_quicktime = None,
+        br_features_realplayer = None,
+        br_features_windowsmedia = None,
+        br_features_gears = None,
+        br_features_silverlight = None,
+        br_cookies = None,
+        br_colordepth = None,
+        br_viewwidth = None,
+        br_viewheight = None,
+        os_name = None,
+        os_family = None,
+        os_manufacturer = None,
+        os_timezone = None,
+        dvce_type = None,
+        dvce_ismobile = None,
+        dvce_screenwidth = None,
+        dvce_screenheight = None,
+        doc_charset = None,
+        doc_width = None,
+        doc_height = None,
+        tr_currency = None,
+        tr_total_base = None,
+        tr_tax_base = None,
+        tr_shipping_base = None,
+        ti_currency = None,
+        ti_price_base = None,
+        base_currency = None,
+        geo_timezone = None,
+        mkt_clickid = None,
+        mkt_network = None,
+        etl_tags = None,
+        dvce_sent_tstamp = None,
+        refr_domain_userid = None,
+        refr_dvce_tstamp = None,
+        derived_contexts = Contexts(List()),
+        domain_sessionid = Some("2b15e5c8-d3b1-11e4-b9d6-1681e6b88ec1"),
+        derived_tstamp = Some(Instant.parse("2013-11-26T00:03:57.886Z")),
+        event_vendor = Some("com.snowplowanalytics.snowplow"),
+        event_name = Some("link_click"),
+        event_format = Some("jsonschema"),
+        event_version = Some("1-0-0"),
+        event_fingerprint = Some("e3dbfa9cca0412c3d4052863cefb547f"),
+        true_tstamp = Some(Instant.parse("2013-11-26T00:03:57.886Z"))
+      )
+      val eventJson = event.toJson(false)
+      eventJson.as[Event] must beRight(event)
+    }
+
+    "successfully decode encoded event which has both contexts and unstruct_event" in {
+      val event = Event(
+        app_id = Some("angry-birds"),
+        platform = Some("web"),
+        etl_tstamp = Some(Instant.parse("2017-01-26T00:01:25.292Z")),
+        collector_tstamp = Instant.parse("2013-11-26T00:02:05Z"),
+        dvce_created_tstamp = Some(Instant.parse("2013-11-26T00:03:57.885Z")),
+        event = Some("page_view"),
+        event_id = UUID.fromString("c6ef3124-b53a-4b13-a233-0088f79dcbcb"),
+        txn_id = Some(41828),
+        name_tracker = Some("cloudfront-1"),
+        v_tracker = Some("js-2.1.0"),
+        v_collector = "clj-tomcat-0.1.0",
+        v_etl = "serde-0.5.2",
+        user_id = Some("jon.doe@email.com"),
+        user_ipaddress = Some("92.231.54.234"),
+        user_fingerprint = Some("2161814971"),
+        domain_userid = Some("bc2e92ec6c204a14"),
+        domain_sessionidx = Some(3),
+        network_userid = Some("ecdff4d0-9175-40ac-a8bb-325c49733607"),
+        geo_country = Some("US"),
+        geo_region = Some("TX"),
+        geo_city = Some("New York"),
+        geo_zipcode = Some("94109"),
+        geo_latitude = Some(37.443604),
+        geo_longitude = Some(-122.4124),
+        geo_region_name = Some("Florida"),
+        ip_isp = Some("FDN Communications"),
+        ip_organization = Some("Bouygues Telecom"),
+        ip_domain = Some("nuvox.net"),
+        ip_netspeed = Some("Cable/DSL"),
+        page_url = Some("http://www.snowplowanalytics.com"),
+        page_title = Some("On Analytics"),
+        page_referrer = None,
+        page_urlscheme = Some("http"),
+        page_urlhost = Some("www.snowplowanalytics.com"),
+        page_urlport = Some(80),
+        page_urlpath = Some("/product/index.html"),
+        page_urlquery = Some("id=GTM-DLRG"),
+        page_urlfragment = Some("4-conclusion"),
+        refr_urlscheme = None,
+        refr_urlhost = None,
+        refr_urlport = None,
+        refr_urlpath = None,
+        refr_urlquery = None,
+        refr_urlfragment = None,
+        refr_medium = None,
+        refr_source = None,
+        refr_term = None,
+        mkt_medium = None,
+        mkt_source = None,
+        mkt_term = None,
+        mkt_content = None,
+        mkt_campaign = None,
+        contexts = Contexts(
+          List(
+            SelfDescribingData(
+              SchemaKey(
+                "org.schema",
+                "WebPage",
+                "jsonschema",
+                SchemaVer.Full(1, 0, 0)
+              ),
+              JsonObject(
+                ("genre", "blog".asJson),
+                ("inLanguage", "en-US".asJson),
+                ("datePublished", "2014-11-06T00:00:00Z".asJson),
+                ("author", "Fred Blundun".asJson),
+                ("breadcrumb", List("blog", "releases").asJson),
+                ("keywords", List("snowplow", "javascript", "tracker", "event").asJson)
+              ).asJson
+            ),
+            SelfDescribingData(
+              SchemaKey(
+                "org.w3",
+                "PerformanceTiming",
+                "jsonschema",
+                SchemaVer.Full(1, 0, 0)
+              ),
+              JsonObject(
+                ("navigationStart", 1415358089861L.asJson),
+                ("unloadEventStart", 1415358090270L.asJson),
+                ("unloadEventEnd", 1415358090287L.asJson),
+                ("redirectStart", 0.asJson),
+                ("redirectEnd", 0.asJson),
+                ("fetchStart", 1415358089870L.asJson),
+                ("domainLookupStart", 1415358090102L.asJson),
+                ("domainLookupEnd", 1415358090102L.asJson),
+                ("connectStart", 1415358090103L.asJson),
+                ("connectEnd", 1415358090183L.asJson),
+                ("requestStart", 1415358090183L.asJson),
+                ("responseStart", 1415358090265L.asJson),
+                ("responseEnd", 1415358090265L.asJson),
+                ("domLoading", 1415358090270L.asJson),
+                ("domInteractive", 1415358090886L.asJson),
+                ("domContentLoadedEventStart", 1415358090968L.asJson),
+                ("domContentLoadedEventEnd", 1415358091309L.asJson),
+                ("domComplete", 0.asJson),
+                ("loadEventStart", 0.asJson),
+                ("loadEventEnd", 0.asJson)
+              ).asJson
+            )
+          )
+        ),
+        se_category = None,
+        se_action = None,
+        se_label = None,
+        se_property = None,
+        se_value = None,
+        unstruct_event = UnstructEvent(
+          Some(
+            SelfDescribingData(
+              SchemaKey(
+                "com.snowplowanalytics.snowplow",
+                "link_click",
+                "jsonschema",
+                SchemaVer.Full(1, 0, 1)
+              ),
+              JsonObject(
+                ("targetUrl", "http://www.example.com".asJson),
+                ("elementClasses", List("foreground").asJson),
+                ("elementId", "exampleLink".asJson)
+              ).asJson
+            )
+          )
+        ),
+        tr_orderid = None,
+        tr_affiliation = None,
+        tr_total = None,
+        tr_tax = None,
+        tr_shipping = None,
+        tr_city = None,
+        tr_state = None,
+        tr_country = None,
+        ti_orderid = None,
+        ti_sku = None,
+        ti_name = None,
+        ti_category = None,
+        ti_price = None,
+        ti_quantity = None,
+        pp_xoffset_min = None,
+        pp_xoffset_max = None,
+        pp_yoffset_min = None,
+        pp_yoffset_max = None,
+        useragent = None,
+        br_name = None,
+        br_family = None,
+        br_version = None,
+        br_type = None,
+        br_renderengine = None,
+        br_lang = None,
+        br_features_pdf = Some(true),
+        br_features_flash = Some(false),
+        br_features_java = None,
+        br_features_director = None,
+        br_features_quicktime = None,
+        br_features_realplayer = None,
+        br_features_windowsmedia = None,
+        br_features_gears = None,
+        br_features_silverlight = None,
+        br_cookies = None,
+        br_colordepth = None,
+        br_viewwidth = None,
+        br_viewheight = None,
+        os_name = None,
+        os_family = None,
+        os_manufacturer = None,
+        os_timezone = None,
+        dvce_type = None,
+        dvce_ismobile = None,
+        dvce_screenwidth = None,
+        dvce_screenheight = None,
+        doc_charset = None,
+        doc_width = None,
+        doc_height = None,
+        tr_currency = None,
+        tr_total_base = None,
+        tr_tax_base = None,
+        tr_shipping_base = None,
+        ti_currency = None,
+        ti_price_base = None,
+        base_currency = None,
+        geo_timezone = None,
+        mkt_clickid = None,
+        mkt_network = None,
+        etl_tags = None,
+        dvce_sent_tstamp = None,
+        refr_domain_userid = None,
+        refr_dvce_tstamp = None,
+        derived_contexts = Contexts(
+          List(
+            SelfDescribingData(
+              SchemaKey(
+                "com.snowplowanalytics.snowplow",
+                "ua_parser_context",
+                "jsonschema",
+                SchemaVer.Full(1, 0, 0)
+              ),
+              JsonObject(
+                ("useragentFamily", "IE".asJson),
+                ("useragentMajor", "7".asJson),
+                ("useragentMinor", "0".asJson),
+                ("useragentPatch", Json.Null),
+                ("useragentVersion", "IE 7.0".asJson),
+                ("osFamily", "Windows XP".asJson),
+                ("osMajor", Json.Null),
+                ("osMinor", Json.Null),
+                ("osPatch", Json.Null),
+                ("osPatchMinor", Json.Null),
+                ("osVersion", "Windows XP".asJson),
+                ("deviceFamily", "Other".asJson)
+              ).asJson
+            )
+          )
+        ),
+        domain_sessionid = Some("2b15e5c8-d3b1-11e4-b9d6-1681e6b88ec1"),
+        derived_tstamp = Some(Instant.parse("2013-11-26T00:03:57.886Z")),
+        event_vendor = Some("com.snowplowanalytics.snowplow"),
+        event_name = Some("link_click"),
+        event_format = Some("jsonschema"),
+        event_version = Some("1-0-0"),
+        event_fingerprint = Some("e3dbfa9cca0412c3d4052863cefb547f"),
+        true_tstamp = Some(Instant.parse("2013-11-26T00:03:57.886Z"))
+      )
+      val eventJson = event.toJson(false)
+      eventJson.as[Event] must beRight(event)
+    }
   }
 
   "The transformSchema method" should {