Query Score Facebook - C# - Unity

 // Query score
    public void QueryScores(int limitUserQuery, Action<List<FacebookUserData>> callbackQueryScoreSuccessPost)
    {
        string apiCommand = string.Format("/app/scores?fields=score,user.limit({0})", limitUserQuery);

        FB.API(apiCommand, HttpMethod.GET, QueryScoresCallback);

        OnQueryScoreSuccess = callbackQueryScoreSuccessPost;
    }

    private void QueryScoresCallback(IGraphResult result)
    {
        if (result.Error != null)
        {
            #if UNITY_EDITOR
            Debug.Log(result.Error);
            #endif

            return;
        }

        #if UNITY_EDITOR
        Debug.Log(result.RawResult);
        #endif

        List<object> scoresGroup = null;
        scoresGroup = FacebookApiUtil.DeserializeScores(result.RawResult);

        List<FacebookUserData> userDatasGroup = new List<FacebookUserData>();
        userDatasGroup = GetUserDatasGroup(scoresGroup);

        if (OnQueryScoreSuccess != null)
            OnQueryScoreSuccess(userDatasGroup);
    }

    private List<FacebookUserData> GetUserDatasGroup(List<object> scoresGroup)
    {
        List<FacebookUserData> userDataGroup = new List<FacebookUserData>();

        foreach (object score in scoresGroup)
        {
            var entry = (Dictionary<string, object>)score;
            var user = (Dictionary<string, object>)entry["user"];      

            FacebookUserData userData = new FacebookUserData();
            userData.userId = user["id"].ToString();
            userData.userName = user["name"].ToString();
            userData.userScore = entry["score"].ToString();
            userDataGroup.Add(userData);

         }

        return userDataGroup;
    }