public async Task<RegisterResponse> RegistrationAsync(RegisterRequest registerRequest)
{
var headers = new HeaderCollection();
headers.Add("origin", _httpClient.BaseAddress?.OriginalString);
headers.CopyTo(_httpClient.DefaultRequestHeaders);
var response = await _httpClient.SendAsync<RegisterResponse>(HttpMethod.Post, "api/Account/register",
registerRequest.AsJson(), CancellationToken.None);
return response;
}