diff --git a/src/main/java/eu/enmeshed/endpoints/RelationshipTemplatesEndpoint.java b/src/main/java/eu/enmeshed/endpoints/RelationshipTemplatesEndpoint.java
index 4211235..21ff455 100644
--- a/src/main/java/eu/enmeshed/endpoints/RelationshipTemplatesEndpoint.java
+++ b/src/main/java/eu/enmeshed/endpoints/RelationshipTemplatesEndpoint.java
@@ -30,7 +30,7 @@ static RelationshipTemplatesEndpoint configure(String url, Builder builder) {
   ConnectorResponse<List<RelationshipTemplate>> getRelationshipTemplates(@QueryMap GetRelationshipTemplatesQuery request);
 
   @RequestLine("GET /api/v2/RelationshipTemplates/{id}")
-  @Headers("Content-Type: application/json")
+  @Headers("Accept: application/json")
   ConnectorResponse<RelationshipTemplate> getRelationshipTemplate(@Param("id") String id);
 
   @RequestLine("GET /api/v2/RelationshipTemplates/Own")
diff --git a/src/main/java/eu/enmeshed/model/request/Request.java b/src/main/java/eu/enmeshed/model/request/Request.java
index 0fc3e52..60d3599 100644
--- a/src/main/java/eu/enmeshed/model/request/Request.java
+++ b/src/main/java/eu/enmeshed/model/request/Request.java
@@ -1,20 +1,31 @@
 package eu.enmeshed.model.request;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+
 import eu.enmeshed.model.messages.MessageContent;
 import eu.enmeshed.model.request.requestItems.RequestItem;
 import java.time.ZonedDateTime;
 import java.util.List;
+
 import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
 import lombok.experimental.SuperBuilder;
 
+
 @NoArgsConstructor
 @Getter
 @Setter
 @SuperBuilder
+@JsonTypeInfo(
+    use = JsonTypeInfo.Id.NAME,
+    include = JsonTypeInfo.As.PROPERTY,
+    property = "@type",
+    visible = true,
+    defaultImpl = Request.class
+)
 public class Request extends MessageContent {
 
   @JsonProperty("@type")