diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3c81909..350ef59 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -48,12 +48,12 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - Fixed distro files and pom according to new release procedure
 
 
-## [v1.2.0]  [r4.15.0] - 2019-11-06
+## [v1.2.0] [r4.15.0] - 2019-11-19
 
 - Added org parameter to support to list item at VO level in gCat Service [#17635]
 
 
-## [v1.1.0] [r4.14.0] - 2019-05-27
+## [v1.1.0] [r4.14.0] - 2019-05-16
 
 - Added Social Post parameter [#13335]
 
diff --git a/src/main/java/org/gcube/gcat/api/GCatConstants.java b/src/main/java/org/gcube/gcat/api/GCatConstants.java
index 4787a87..7890ce1 100644
--- a/src/main/java/org/gcube/gcat/api/GCatConstants.java
+++ b/src/main/java/org/gcube/gcat/api/GCatConstants.java
@@ -14,6 +14,7 @@ public class GCatConstants {
 	public static final String SERVICE_ENTRY_NAME = "org.gcube.gcat.ResourceInitializer";
 	public static final String PURGE_QUERY_PARAMETER = "purge";
 	public static final String APPLICATION_JSON_CHARSET_UTF_8 = "application/json;charset=UTF-8";
+	public static final String APPLICATION_JSON_API = "application/vnd.api+json";
 	public static final String LIMIT_QUERY_PARAMETER = "limit";
 	public static final String OFFSET_QUERY_PARAMETER = "offset";
 	public static final String COUNT_QUERY_PARAMETER = "count";
@@ -32,4 +33,7 @@ public class GCatConstants {
 	
 	public static final String ORGANIZATION_FILTER_TEMPLATE = ORGANIZATION_PARAMETER + ":%s";
 	
+	public static final String JSON_API_DATA_FIELD_NAME = "data";
+	
+	
 }