public IActionResult Index()
        {
            var list      = new List <ToDoCardViewModel>();
            var id        = ((ClaimsIdentity)User.Identity).GetSpecificClaim(ClaimTypes.NameIdentifier);
            var titleList = _toDoTitleService.GetList(c => c.UserId == Guid.Parse(id)).Data;
            var itemList  = _toDoItemService.GetList().Data;


            foreach (var title in titleList)
            {
                var items = itemList.Where(c => c.ToDoTitleId == title.Id).ToList();

                list.Add(new ToDoCardViewModel()
                {
                    ToDoItem = items, ToDoTitle = title
                });
            }

            return(Ok(list));
        }