diff --git a/src/main/java/org/gcube/data/access/storagehub/services/GroupManager.java b/src/main/java/org/gcube/data/access/storagehub/services/GroupManager.java
index e952b55..8576d90 100644
--- a/src/main/java/org/gcube/data/access/storagehub/services/GroupManager.java
+++ b/src/main/java/org/gcube/data/access/storagehub/services/GroupManager.java
@@ -9,7 +9,9 @@ import javax.jcr.Node;
 import javax.jcr.security.AccessControlManager;
 import javax.jcr.security.Privilege;
 import javax.servlet.ServletContext;
+import javax.ws.rs.Consumes;
 import javax.ws.rs.DELETE;
+import javax.ws.rs.FormParam;
 import javax.ws.rs.GET;
 import javax.ws.rs.POST;
 import javax.ws.rs.PUT;
@@ -18,7 +20,6 @@ import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
 import javax.ws.rs.core.Context;
 import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.Response;
 
 import org.apache.jackrabbit.api.JackrabbitSession;
 import org.apache.jackrabbit.api.security.JackrabbitAccessControlList;
@@ -39,7 +40,6 @@ import org.gcube.data.access.storagehub.Constants;
 import org.gcube.data.access.storagehub.Utils;
 import org.gcube.data.access.storagehub.exception.MyAuthException;
 import org.gcube.data.access.storagehub.handlers.CredentialHandler;
-import org.glassfish.jersey.media.multipart.FormDataParam;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -88,8 +88,9 @@ public class GroupManager {
 
 	@POST
 	@Path("")
+	@Consumes(MediaType.APPLICATION_FORM_URLENCODED)
 	@AuthorizationControl(allowed={"lucio.lelii"}, exception=MyAuthException.class)
-	public String createGroup(@FormDataParam("group") String group){
+	public String createGroup(@FormParam("group") String group){
 
 		JackrabbitSession session = null;
 		String groupId = null;
@@ -149,8 +150,9 @@ public class GroupManager {
 
 	@PUT
 	@Path("{id}")
+	@Consumes(MediaType.APPLICATION_FORM_URLENCODED)
 	@AuthorizationControl(allowed={"lucio.lelii"}, exception=MyAuthException.class)
-	public boolean addUserToGroup(@PathParam("id") String groupId, @FormDataParam("userId") String userId){
+	public boolean addUserToGroup(@PathParam("id") String groupId, @FormParam("userId") String userId){
 
 		JackrabbitSession session = null;
 		boolean success = false;
diff --git a/src/main/java/org/gcube/data/access/storagehub/services/UserManager.java b/src/main/java/org/gcube/data/access/storagehub/services/UserManager.java
index 8ca4f8b..4b59a63 100644
--- a/src/main/java/org/gcube/data/access/storagehub/services/UserManager.java
+++ b/src/main/java/org/gcube/data/access/storagehub/services/UserManager.java
@@ -10,7 +10,9 @@ import javax.jcr.Node;
 import javax.jcr.NodeIterator;
 import javax.jcr.query.QueryResult;
 import javax.servlet.ServletContext;
+import javax.ws.rs.Consumes;
 import javax.ws.rs.DELETE;
+import javax.ws.rs.FormParam;
 import javax.ws.rs.GET;
 import javax.ws.rs.POST;
 import javax.ws.rs.Path;
@@ -34,7 +36,6 @@ import org.gcube.data.access.storagehub.Utils;
 import org.gcube.data.access.storagehub.exception.MyAuthException;
 import org.gcube.data.access.storagehub.handlers.CredentialHandler;
 import org.gcube.data.access.storagehub.handlers.UnshareHandler;
-import org.glassfish.jersey.media.multipart.FormDataParam;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -87,8 +88,9 @@ public class UserManager {
 
 	@POST
 	@Path("")
+	@Consumes(MediaType.APPLICATION_FORM_URLENCODED)
 	@AuthorizationControl(allowed={"lucio.lelii"}, exception=MyAuthException.class)
-	public String createUser(@FormDataParam("user") String user, @FormDataParam("password") String password){
+	public String createUser(@FormParam("user") String user, @FormParam("password") String password){
 
 		JackrabbitSession session = null;
 		String userId = null;