public static void createItem(LeaderboardEntity request)
        {
            LeaderboardsService leaderboardsService = new LeaderboardsService();

            leaderboardsService.create(request, (InsertUpdateResponse insertUpdateResponse) => {
                Debug.Log("successful " + "create Ad: " + insertUpdateResponse.Guid);
            }, (int resultCode) => {
                Debug.Log("failure " + "create Ad: " + resultCode);
            });
        }