public async Task <IActionResult> AcceptInvitation(int id) { var userId = this.GetUserId(); await _eventService.AcceptInvatationAsync(id, userId); var ev = await _eventService.GetEventByIdAsync(id, nameof(Event.Owner)); await _notificationManager.InvitationAcceptedAsync(ev.Owner.Id, ev.Name, User.Identity.Name); return(Ok()); }