public async Task <IActionResult> Create([FromBody] ProposalCommand command)
        {
            try
            {
                await _repository.AddAsync(new Proposal
                {
                    AdvertId    = command.AdvertId,
                    Status      = ProposalStatus.Pending,
                    Value       = command.Value,
                    CandidateId = (await _userManager.FindByNameAsync(User.Identity.Name)).Id
                });

                await _unitOfWork.Commit();

                return(Ok());
            }
            catch (Exception ex)
            {
                return(BadRequest(ex.Message));
            }
        }