diff --git a/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/BusinessPartnerNumber.java b/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/BusinessPartnerNumber.java
new file mode 100644
index 000000000..94be8dc46
--- /dev/null
+++ b/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/BusinessPartnerNumber.java
@@ -0,0 +1,30 @@
+/*
+ * *******************************************************************************
+ *  Copyright (c) 2021,2024 Contributors to the Eclipse Foundation
+ *
+ *  See the NOTICE file(s) distributed with this work for additional
+ *  information regarding copyright ownership.
+ *
+ *  This program and the accompanying materials are made available under the
+ *  terms of the Apache License, Version 2.0 which is available at
+ *  https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ * ******************************************************************************
+ */
+
+package org.eclipse.tractusx.managedidentitywallets.domain;
+
+public record BusinessPartnerNumber(String bpn) {
+
+    public String toString() {
+        return bpn;
+    }
+
+}
diff --git a/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/DID.java b/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/DID.java
new file mode 100644
index 000000000..f43ab3683
--- /dev/null
+++ b/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/DID.java
@@ -0,0 +1,30 @@
+/*
+ * *******************************************************************************
+ *  Copyright (c) 2021,2024 Contributors to the Eclipse Foundation
+ *
+ *  See the NOTICE file(s) distributed with this work for additional
+ *  information regarding copyright ownership.
+ *
+ *  This program and the accompanying materials are made available under the
+ *  terms of the Apache License, Version 2.0 which is available at
+ *  https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ * ******************************************************************************
+ */
+
+package org.eclipse.tractusx.managedidentitywallets.domain;
+
+public record DID(String did) {
+
+    public String toString() {
+        return did;
+    }
+
+}
diff --git a/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/IdpTokenResponse.java b/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/IdpTokenResponse.java
new file mode 100644
index 000000000..4735a8b54
--- /dev/null
+++ b/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/IdpTokenResponse.java
@@ -0,0 +1,64 @@
+/*
+ * *******************************************************************************
+ *  Copyright (c) 2021,2024 Contributors to the Eclipse Foundation
+ *
+ *  See the NOTICE file(s) distributed with this work for additional
+ *  information regarding copyright ownership.
+ *
+ *  This program and the accompanying materials are made available under the
+ *  terms of the Apache License, Version 2.0 which is available at
+ *  https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ * ******************************************************************************
+ */
+
+package org.eclipse.tractusx.managedidentitywallets.domain;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.nimbusds.jwt.JWT;
+import com.nimbusds.jwt.JWTParser;
+import lombok.SneakyThrows;
+
+import java.text.ParseException;
+
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class IdpTokenResponse {
+    private JWT idToken;
+
+    @JsonProperty("id_token")
+    public JWT idToken() {
+        return idToken;
+    }
+
+    public void setIdToken(String idToken) throws ParseException {
+        // todo bri: add validation for the id token
+        this.idToken = JWTParser.parse(idToken);
+    }
+
+    @SneakyThrows
+    public String bpnClaim() {
+        return this.idToken.getJWTClaimsSet().getClaim("BPN").toString();
+    }
+
+    @SneakyThrows
+    public BusinessPartnerNumber bpn() {
+        return new BusinessPartnerNumber(this.bpnClaim());
+    }
+
+    @Override
+    @SneakyThrows
+    public String toString() {
+        return "IdpResponse{" +
+                "id_token='" + idToken.getJWTClaimsSet().toString() + '\'' +
+                '}';
+    }
+}
diff --git a/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/KeyPair.java b/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/KeyPair.java
new file mode 100644
index 000000000..31b29da1c
--- /dev/null
+++ b/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/KeyPair.java
@@ -0,0 +1,25 @@
+/*
+ * *******************************************************************************
+ *  Copyright (c) 2021,2024 Contributors to the Eclipse Foundation
+ *
+ *  See the NOTICE file(s) distributed with this work for additional
+ *  information regarding copyright ownership.
+ *
+ *  This program and the accompanying materials are made available under the
+ *  terms of the Apache License, Version 2.0 which is available at
+ *  https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ * ******************************************************************************
+ */
+
+package org.eclipse.tractusx.managedidentitywallets.domain;
+
+public record KeyPair(String keyId, String privateKey, String publicKey) {
+}
diff --git a/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/StsTokenErrorResponse.java b/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/StsTokenErrorResponse.java
new file mode 100644
index 000000000..0ec307d63
--- /dev/null
+++ b/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/StsTokenErrorResponse.java
@@ -0,0 +1,34 @@
+/*
+ * *******************************************************************************
+ *  Copyright (c) 2021,2024 Contributors to the Eclipse Foundation
+ *
+ *  See the NOTICE file(s) distributed with this work for additional
+ *  information regarding copyright ownership.
+ *
+ *  This program and the accompanying materials are made available under the
+ *  terms of the Apache License, Version 2.0 which is available at
+ *  https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ * ******************************************************************************
+ */
+
+package org.eclipse.tractusx.managedidentitywallets.domain;
+
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@NoArgsConstructor
+@Getter
+@Setter
+public class StsTokenErrorResponse {
+    private String error;
+    private String errorDescription;
+}
diff --git a/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/StsTokenResponse.java b/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/StsTokenResponse.java
new file mode 100644
index 000000000..2e78cfff0
--- /dev/null
+++ b/src/main/java/org/eclipse/tractusx/managedidentitywallets/domain/StsTokenResponse.java
@@ -0,0 +1,38 @@
+/*
+ * *******************************************************************************
+ *  Copyright (c) 2021,2024 Contributors to the Eclipse Foundation
+ *
+ *  See the NOTICE file(s) distributed with this work for additional
+ *  information regarding copyright ownership.
+ *
+ *  This program and the accompanying materials are made available under the
+ *  terms of the Apache License, Version 2.0 which is available at
+ *  https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ * ******************************************************************************
+ */
+
+package org.eclipse.tractusx.managedidentitywallets.domain;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Getter
+@Setter
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class StsTokenResponse {
+    private String token;
+    private long expiresAt;
+}