public HttpResponseMessage GetPlaylistFullFromUser()
        {
            HttpResponseMessage responseMsg;
            HttpResponseHelper<PlaylistVM> _helper = new HttpResponseHelper<PlaylistVM>(this);

            try
            {
                string userId = Microsoft.AspNet.Identity.IdentityExtensions.GetUserId(RequestContext.Principal.Identity);

                var playlists = _mngr.getPlaylistsFull(userId);
                responseMsg = _helper.CreateCustomResponseMsg(playlists.ToList(), HttpStatusCode.OK);

            }
            catch (Exception e)
            {
                responseMsg = _helper.CreateErrorResponseMsg(new HttpError(e.Message), HttpStatusCode.InternalServerError);
            }

            return responseMsg;
        }