diff --git a/modules/sortableBidAdapter.js b/modules/sortableBidAdapter.js
index f5d3a6b1bb5..6989abff143 100644
--- a/modules/sortableBidAdapter.js
+++ b/modules/sortableBidAdapter.js
@@ -2,6 +2,7 @@ import * as utils from '../src/utils.js';
 import { registerBidder } from '../src/adapters/bidderFactory.js';
 import { config } from '../src/config.js';
 import { BANNER, NATIVE, VIDEO } from '../src/mediaTypes.js';
+import { createEidsArray } from './userId/eids.js';
 
 const BIDDER_CODE = 'sortable';
 const SERVER_URL = 'https://c.deployads.com';
@@ -218,6 +219,8 @@ export const spec = {
       return rv;
     });
     const gdprConsent = bidderRequest && bidderRequest.gdprConsent;
+    const bidUserId = validBidReqs[0].userId;
+    const eids = createEidsArray(bidUserId);
     const sortableBidReq = {
       id: utils.getUniqueIdentifierStr(),
       imp: sortableImps,
@@ -241,6 +244,9 @@ export const spec = {
           h: screen.height
         },
       },
+      user: {
+        ext: {}
+      }
     };
     if (bidderRequest && bidderRequest.timeout > 0) {
       sortableBidReq.tmax = bidderRequest.timeout;
@@ -255,6 +261,9 @@ export const spec = {
         sortableBidReq.regs.ext.gdpr = gdprConsent.gdprApplies ? 1 : 0
       }
     }
+    if (eids.length) {
+      sortableBidReq.user.ext.eids = eids;
+    }
     if (bidderRequest.uspConsent) {
       sortableBidReq.regs.ext.us_privacy = bidderRequest.uspConsent;
     }
diff --git a/test/spec/modules/sortableBidAdapter_spec.js b/test/spec/modules/sortableBidAdapter_spec.js
index 8d2b4eea87d..97f80e8dfeb 100644
--- a/test/spec/modules/sortableBidAdapter_spec.js
+++ b/test/spec/modules/sortableBidAdapter_spec.js
@@ -329,7 +329,40 @@ describe('sortableBidAdapter', function() {
       const gdprRequest = spec.buildRequests(gdprBidRequests, {refererInfo: { referer: 'http://localhost:9876/' }});
       const gdprRequestBody = JSON.parse(gdprRequest.data);
       expect(gdprRequestBody.regs).to.deep.equal({ext: {}});
-      expect(gdprRequestBody.user).to.equal(undefined);
+      expect(gdprRequestBody.user.ext.consent).to.equal(undefined);
+    })
+
+    const eidsBidRequests = [{
+      'bidder': 'sortable',
+      'params': {
+        'tagId': '403370',
+        'siteId': 'example.com',
+        'floor': 0.21,
+        'keywords': {},
+        'floorSizeMap': {}
+      },
+      'bidId': '30b31c1838de1e',
+      'bidderRequestId': '22edbae2733bf6',
+      'auctionId': '1d1a030790a475'
+    }];
+
+    it('should not set user ids when none present', function() {
+      const eidsRequest = spec.buildRequests(eidsBidRequests, {refererInfo: {
+        referer: 'http://localhost:9876/'
+      }});
+      const eidsRequestBody = JSON.parse(eidsRequest.data);
+
+      expect(eidsRequestBody.user.ext.eids).to.equal(undefined);
+    })
+
+    it('should set user ids when present', function() {
+      eidsBidRequests[0].userId = { criteoId: 'sample-userid' };
+      const eidsRequest = spec.buildRequests(eidsBidRequests, {refererInfo: {
+        referer: 'http://localhost:9876/'
+      }});
+      const eidsRequestBody = JSON.parse(eidsRequest.data);
+
+      expect(eidsRequestBody.user.ext.eids.length).to.equal(1);
     })
   });