private async Task GiveUserSupporterRole(User user)
        {
            await _userManager.RemoveFromRoleAsync(user, Roles.RegisteredUser);

            await _userManager.AddToRoleAsync(user, Roles.Supporter);

            var emailContent = _emailContentService.GetCityToSupporterRoleOnApproveEmail();
            await _emailSendingService.SendEmailAsync(user.Email, emailContent.Subject, emailContent.Message,
                                                      emailContent.Title);
        }