diff --git a/src/main/java/org/gcube/common/authorization/library/QualifiersList.java b/src/main/java/org/gcube/common/authorization/library/QualifiersList.java
new file mode 100644
index 0000000..3375e7c
--- /dev/null
+++ b/src/main/java/org/gcube/common/authorization/library/QualifiersList.java
@@ -0,0 +1,42 @@
+package org.gcube.common.authorization.library;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.xml.bind.annotation.XmlAccessType;
+import javax.xml.bind.annotation.XmlAccessorType;
+import javax.xml.bind.annotation.XmlRootElement;
+import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
+
+import org.gcube.common.authorization.library.utils.MapAdapter;
+
+
+
+@XmlRootElement
+@XmlAccessorType(XmlAccessType.FIELD)
+public class QualifiersList {
+
+	
+	@XmlJavaTypeAdapter(MapAdapter.class)
+	Map<String, String> qualifierTokenMap= new HashMap<String, String>();
+
+	
+	@SuppressWarnings("unused")
+	private QualifiersList(){}
+	
+	public QualifiersList(Map<String, String> qualifierTokenMap) {
+		this.qualifierTokenMap = qualifierTokenMap;
+	}
+
+	public Map<String, String> getQualifiers() {
+		return qualifierTokenMap;
+	}
+
+	@Override
+	public String toString() {
+		return "QualifiersList [qualifierTokenMap=" + qualifierTokenMap + "]";
+	}
+
+	
+	
+}
diff --git a/src/main/java/org/gcube/common/authorization/library/utils/MapAdapter.java b/src/main/java/org/gcube/common/authorization/library/utils/MapAdapter.java
new file mode 100644
index 0000000..6961374
--- /dev/null
+++ b/src/main/java/org/gcube/common/authorization/library/utils/MapAdapter.java
@@ -0,0 +1,26 @@
+package org.gcube.common.authorization.library.utils;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.xml.bind.annotation.adapters.XmlAdapter;
+
+
+public class MapAdapter extends XmlAdapter<MapElements[], Map<String, String>> {
+	
+    public MapElements[] marshal(Map<String, String> arg0) throws Exception {
+        MapElements[] mapElements = new MapElements[arg0.size()];
+        int i = 0;
+        for (Map.Entry<String, String> entry : arg0.entrySet())
+            mapElements[i++] = new MapElements(entry.getKey(), entry.getValue());
+
+        return mapElements;
+    }
+
+    public Map<String, String> unmarshal(MapElements[] arg0) throws Exception {
+        Map<String, String> r = new HashMap<String, String>();
+        for (MapElements mapelement : arg0)
+            r.put(mapelement.key, mapelement.value);
+        return r;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/org/gcube/common/authorization/library/utils/MapElement.java b/src/main/java/org/gcube/common/authorization/library/utils/MapElement.java
new file mode 100644
index 0000000..2b66bea
--- /dev/null
+++ b/src/main/java/org/gcube/common/authorization/library/utils/MapElement.java
@@ -0,0 +1,18 @@
+package org.gcube.common.authorization.library.utils;
+
+import javax.xml.bind.annotation.XmlElement;
+
+class MapElements
+{
+  @XmlElement public String  key;
+  @XmlElement public String value;
+
+  @SuppressWarnings("unused")
+private MapElements() {} //Required by JAXB
+
+  public MapElements(String key, String value)
+  {
+    this.key   = key;
+    this.value = value;
+  }
+}
diff --git a/src/test/java/org/gcube/common/authorization/library/binder/AuthorizationEntryBinder.java b/src/test/java/org/gcube/common/authorization/library/binder/AuthorizationEntryBinder.java
index 8095ad7..411ee1f 100644
--- a/src/test/java/org/gcube/common/authorization/library/binder/AuthorizationEntryBinder.java
+++ b/src/test/java/org/gcube/common/authorization/library/binder/AuthorizationEntryBinder.java
@@ -3,6 +3,7 @@ package org.gcube.common.authorization.library.binder;
 import java.io.StringReader;
 import java.io.StringWriter;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -10,6 +11,7 @@ import javax.xml.bind.JAXBContext;
 import javax.xml.bind.JAXBException;
 
 import org.gcube.common.authorization.library.AuthorizationEntry;
+import org.gcube.common.authorization.library.QualifiersList;
 import org.gcube.common.authorization.library.policies.Policy;
 import org.gcube.common.authorization.library.provider.UserInfo;
 import org.junit.Assert;
@@ -18,7 +20,7 @@ import org.junit.Test;
 public class AuthorizationEntryBinder {
 	
 	public static JAXBContext getContext() throws JAXBException{
-		return JAXBContext.newInstance(AuthorizationEntry.class);
+		return JAXBContext.newInstance(QualifiersList.class, AuthorizationEntry.class);
 	}
 	
 	@Test
@@ -34,5 +36,14 @@ public class AuthorizationEntryBinder {
 		AuthorizationEntry ae2 = (AuthorizationEntry)context.createUnmarshaller().unmarshal(new StringReader(sw.toString()));
 		System.out.println(ae2.toString());
 		Assert.assertEquals(ae1, ae2);
+		
+		QualifiersList entries = new QualifiersList(Collections.singletonMap("qualifier", "token"));
+		System.out.println(entries);
+		sw = new StringWriter();
+		context.createMarshaller().marshal(entries, sw);
+		System.out.println(sw);
+		
+		QualifiersList entries2 = (QualifiersList)context.createUnmarshaller().unmarshal(new StringReader(sw.toString()));
+		
 	}
 }