diff --git a/pom.xml b/pom.xml
index 93b1af6..e12bd39 100644
--- a/pom.xml
+++ b/pom.xml
@@ -42,6 +42,13 @@
             <version>1.7.7</version>
             <scope>provided</scope>
         </dependency>
+        
+        <dependency>
+		    <groupId>com.fasterxml.jackson.core</groupId>
+		    <artifactId>jackson-databind</artifactId>
+		    <version>2.17.0</version> <!-- Use the latest stable version -->
+		    <scope>provided</scope>
+		</dependency>
 
     </dependencies>
 </project>
diff --git a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/Wallix.java b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/Wallix.java
index ac52b8c..5ffbfdf 100644
--- a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/Wallix.java
+++ b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/Wallix.java
@@ -19,13 +19,13 @@ import org.apache.guacamole.environment.Environment;
 import org.apache.guacamole.environment.LocalEnvironment;
 
 public class Wallix {
-
+	
+	private final static String HEADER_AUTH_USER = "X-Auth-User";
+	
+	private final static String HEADER_AUTH_KEY = "X-Auth-Key";
+	
 	private static Wallix INSTANCE;
 	
-	private static String HEADER_AUTH_USER = "X-Auth-User";
-	
-	private static String HEADER_AUTH_KEY = "X-Auth-Key";
-	
 	private String url;
 
 	private String user;
@@ -109,5 +109,13 @@ public class Wallix {
 			throw e;
 		}
 	}
+	
+	public final class API {
+	
+		public static final String ATTRIBUTE_GROUP_NAME = "group_name";
+		
+		public static final String ATTRIBUTE_GROUP_USERS = "users";
+
+	}
 
 }
diff --git a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/WallixConfigSynchronizer.java b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/WallixConfigSynchronizer.java
index 3d593e2..c40eed3 100644
--- a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/WallixConfigSynchronizer.java
+++ b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/WallixConfigSynchronizer.java
@@ -1,11 +1,17 @@
 package cm.soungui.guacamole.ext.wallix.sync;
 
+import java.util.ArrayList;
 import java.util.List;
 
 import org.apache.guacamole.GuacamoleException;
 import org.apache.guacamole.environment.LocalEnvironment;
 
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
 import cm.soungui.guacamole.ext.wallix.sync.db.DB;
+import cm.soungui.guacamole.ext.wallix.sync.db.User;
 import cm.soungui.guacamole.ext.wallix.sync.db.UserGroup;
 
 public class WallixConfigSynchronizer implements Runnable {
@@ -36,11 +42,13 @@ public class WallixConfigSynchronizer implements Runnable {
 		System.out.println("Synchronizing groups");
 		System.out.println("Getting Wallix groups");
 		printWallixVersion();
-		getWallixGroups();
+		List<UserGroup> wallixGroups = getWallixGroups();
+		System.out.println("Wallix Groups");
+		wallixGroups.forEach(group -> System.out.println(group.getName()));
 		
 		DB db = DB.getInstance();
-		List<UserGroup> groups = db.getUserGroups();
-		for (UserGroup group : groups) {
+		List<UserGroup> dbGroups = db.getUserGroups();
+		for (UserGroup group : dbGroups) {
 			System.out.println("ID : " + group.getId() + " - Name : " + group.getName());
 		}
 	}
@@ -51,10 +59,30 @@ public class WallixConfigSynchronizer implements Runnable {
 		System.out.println(output);
 	}
 	
-	private void getWallixGroups() throws Exception {
+	private List<UserGroup> getWallixGroups() throws Exception {
 		Wallix wallix = Wallix.getInstance();
 		String output = wallix.get("/usergroups");
-		System.out.println(output);
+		
+		ObjectMapper objectMapper = new ObjectMapper();
+        JsonNode jsonNode = objectMapper.readTree(output);
+        List<UserGroup> list = new ArrayList<>();
+        
+        jsonNode.elements().forEachRemaining((e) -> {
+        	ObjectNode node = (ObjectNode) e;
+        	
+        	UserGroup group = new UserGroup();
+        	group.setName(node.findValue(Wallix.API.ATTRIBUTE_GROUP_NAME).asText());
+        	
+        	node.findValues(Wallix.API.ATTRIBUTE_GROUP_USERS).forEach(userNode -> {
+        		User user = new User();
+        		user.setName(userNode.textValue());
+        		group.getMembers().add(user);
+        	});
+        	
+        	list.add(group);
+        });
+		
+		return list;
 	}
 
 }
diff --git a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/UserGroup.java b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/UserGroup.java
index f2ae275..b03c70a 100644
--- a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/UserGroup.java
+++ b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/UserGroup.java
@@ -1,18 +1,22 @@
 package cm.soungui.guacamole.ext.wallix.sync.db;
 
-import java.util.ArrayList;
-import java.util.List;
+import java.util.HashSet;
+import java.util.Set;
 
 public class UserGroup extends Entity {
 	
 	private int groupId;
 	
-	private List<Entity> members = new ArrayList<>();
+	private Set<Entity> members = new HashSet<>();
 	
 	@Override
 	public EntityType getType() {
 		return EntityType.GROUP;
 	}
+	
+	@Override
+	public void setType(EntityType type) {
+	}
 
 	public int getGroupId() {
 		return groupId;
@@ -22,7 +26,7 @@ public class UserGroup extends Entity {
 		this.groupId = groupId;
 	}
 
-	public List<Entity> getMembers() {
+	public Set<Entity> getMembers() {
 		return members;
 	}