public async Task <IActionResult> Edit(long id)
        {
            var user = await TryGetUser(User);

            var allOwnerAccounts = await GetLegitUsers(user);

            var channel = _channelManager.GetChannelById(id);

            var model = new AddChannelViewModel
            {
                OwnerUserId = channel.OwnerUserId,
                Channel     = channel
            };

            model.Owners.AddRange(allOwnerAccounts);

            return(View("Add", model));
        }