public async Task <IActionResult> AcceptInvitationAsync(UserInvitationDto userInvitationDto)
{
var userId = await _userCommandService.AcceptInvitationAsync(userInvitationDto);
var user = await _userQueryService.GetUserByIdAsync(userId);
await _channelCommandService.AddUserToDefaultChannelsAsync(userId, user.WorkspaceId);
await _conversationCommandService.StartSelfConversationAsync(userId, user.WorkspaceId);
return(Ok());
}