diff --git a/src/main/java/org/gcube/common/authorization/library/AuthorizationEntry.java b/src/main/java/org/gcube/common/authorization/library/AuthorizationEntry.java
index 989588c..e6366c1 100644
--- a/src/main/java/org/gcube/common/authorization/library/AuthorizationEntry.java
+++ b/src/main/java/org/gcube/common/authorization/library/AuthorizationEntry.java
@@ -83,5 +83,11 @@ public class AuthorizationEntry {
 			return false;
 		return true;
 	}
-	
+
+	@Override
+	public String toString() {
+		return "AuthorizationEntry [clientInfo=" + clientInfo + ", context="
+				+ context + ", map=" + map + ", policies=" + policies + "]";
+	}
+		
 }
diff --git a/src/main/java/org/gcube/common/authorization/library/policies/Policy.java b/src/main/java/org/gcube/common/authorization/library/policies/Policy.java
index 390f6df..d51b3c2 100644
--- a/src/main/java/org/gcube/common/authorization/library/policies/Policy.java
+++ b/src/main/java/org/gcube/common/authorization/library/policies/Policy.java
@@ -7,11 +7,25 @@ import javax.xml.bind.annotation.XmlRootElement;
 @XmlRootElement
 @XmlAccessorType(XmlAccessType.FIELD)
 public abstract class Policy {
-		
+	
+	private long id;
+	
 	protected Policy() {}
-
+		
 	public abstract PolicyType getPolicyType();
 	
 	public abstract String getPolicyAsString();
-		
+	
+	public abstract ServiceAccess getServiceAccess();
+	
+	public abstract String getContext();
+	
+	public long getId() {
+		return id;
+	}
+
+	public void setId(long id) {
+		this.id = id;
+	}
+	
 }
diff --git a/src/main/java/org/gcube/common/authorization/library/policies/Service2ServicePolicy.java b/src/main/java/org/gcube/common/authorization/library/policies/Service2ServicePolicy.java
index bdb4a04..a988c3f 100644
--- a/src/main/java/org/gcube/common/authorization/library/policies/Service2ServicePolicy.java
+++ b/src/main/java/org/gcube/common/authorization/library/policies/Service2ServicePolicy.java
@@ -11,7 +11,7 @@ public class Service2ServicePolicy extends Policy{
 	private ServiceAccess client;
 	private String context;
 	private ServiceAccess serviceAccess;
-
+		
 	protected Service2ServicePolicy(){}
 	
 	public Service2ServicePolicy(String context, ServiceAccess serviceAccess,
@@ -20,7 +20,7 @@ public class Service2ServicePolicy extends Policy{
 		this.serviceAccess = serviceAccess;
 		this.client = client;
 	}
-
+	
 	@Override
 	public PolicyType getPolicyType() {
 		return PolicyType.SERVICE;
diff --git a/src/main/java/org/gcube/common/authorization/library/policies/User2ServicePolicy.java b/src/main/java/org/gcube/common/authorization/library/policies/User2ServicePolicy.java
index 9c51222..05c2f69 100644
--- a/src/main/java/org/gcube/common/authorization/library/policies/User2ServicePolicy.java
+++ b/src/main/java/org/gcube/common/authorization/library/policies/User2ServicePolicy.java
@@ -25,6 +25,10 @@ public class User2ServicePolicy extends Policy {
 		return entity;
 	}
 	
+	public ServiceAccess getServiceAccess() {
+		return serviceAccess;
+	}
+
 	@Override
 	public PolicyType getPolicyType() {
 		return PolicyType.USER;
diff --git a/src/main/java/org/gcube/common/authorization/library/provider/ClientInfo.java b/src/main/java/org/gcube/common/authorization/library/provider/ClientInfo.java
index 138ca57..062df8a 100644
--- a/src/main/java/org/gcube/common/authorization/library/provider/ClientInfo.java
+++ b/src/main/java/org/gcube/common/authorization/library/provider/ClientInfo.java
@@ -13,6 +13,11 @@ import javax.xml.bind.annotation.XmlSeeAlso;
 @XmlSeeAlso(value={UserInfo.class, ServiceInfo.class})
 public abstract class ClientInfo implements Serializable{
 
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 1L;
+
 	public abstract String getId();
 		
 	public abstract List<String> getRoles();
diff --git a/src/main/java/org/gcube/common/authorization/library/provider/ServiceIdentifier.java b/src/main/java/org/gcube/common/authorization/library/provider/ServiceIdentifier.java
index 6ca8389..58ccd82 100644
--- a/src/main/java/org/gcube/common/authorization/library/provider/ServiceIdentifier.java
+++ b/src/main/java/org/gcube/common/authorization/library/provider/ServiceIdentifier.java
@@ -1,18 +1,25 @@
 package org.gcube.common.authorization.library.provider;
 
+import java.io.Serializable;
+
 import javax.xml.bind.annotation.XmlAccessType;
 import javax.xml.bind.annotation.XmlAccessorType;
 import javax.xml.bind.annotation.XmlRootElement;
 
 @XmlRootElement
 @XmlAccessorType(XmlAccessType.FIELD)
-public class ServiceIdentifier {
+public class ServiceIdentifier implements Serializable{
 
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 1L;
+	
 	private String serviceClass;
 	private String serviceName;
 	private String serviceId;
 	
-	public ServiceIdentifier() {}
+	protected ServiceIdentifier() {}
 
 	public ServiceIdentifier(String serviceClass, String serviceName, String serviceId) {
 		super();
@@ -34,13 +41,17 @@ public class ServiceIdentifier {
 	}
 	
 	public String getFullIdentifier(){
-		return getIdentifier(serviceClass, serviceName, serviceId);
-	}
-
-	public static String getIdentifier(String serviceClass, String serviceName, String serviceId){
 		return serviceClass+":"+serviceName+":"+serviceId;
 	}
 	
+	
+	public static ServiceIdentifier getServiceIdentifierFromId(String serviceId){
+		 String[] split = serviceId.split(":");
+		 if (split.length!=3)
+			 throw new IllegalArgumentException("invalid serviceId provided: "+serviceId);
+		 return new ServiceIdentifier(split[0], split[1] , split[2]);
+	}
+	
 	@Override
 	public int hashCode() {
 		final int prime = 31;
diff --git a/src/main/java/org/gcube/common/authorization/library/provider/ServiceInfo.java b/src/main/java/org/gcube/common/authorization/library/provider/ServiceInfo.java
index 3b74ad5..e1a281b 100644
--- a/src/main/java/org/gcube/common/authorization/library/provider/ServiceInfo.java
+++ b/src/main/java/org/gcube/common/authorization/library/provider/ServiceInfo.java
@@ -11,6 +11,10 @@ import javax.xml.bind.annotation.XmlRootElement;
 @XmlAccessorType(XmlAccessType.FIELD)
 public class ServiceInfo extends ClientInfo{
 
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 1L;
 	ServiceIdentifier serviceIdentifier;
 	
 	protected ServiceInfo() {}
diff --git a/src/main/java/org/gcube/common/authorization/library/provider/UserInfo.java b/src/main/java/org/gcube/common/authorization/library/provider/UserInfo.java
index 915242b..b0e6b6c 100644
--- a/src/main/java/org/gcube/common/authorization/library/provider/UserInfo.java
+++ b/src/main/java/org/gcube/common/authorization/library/provider/UserInfo.java
@@ -12,6 +12,11 @@ import javax.xml.bind.annotation.XmlRootElement;
 @XmlAccessorType(XmlAccessType.FIELD)
 public class UserInfo extends ClientInfo {
 
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 1L;
+	
 	private String clientId;
 	private List<String> roles = Collections.emptyList();