public bool Post(int userId, decimal pay)
        {
            var value = new { userId = userId, pay = pay };
            var client = new HttpClient();
            var responseMessage = client.PostAsJsonAsync("SystemDonate/DonateOnce", value).Result;
            if (responseMessage.StatusCode == System.Net.HttpStatusCode.OK)
            {
                return responseMessage.Content.ReadAsAsync<bool>().Result;
            }
            else
            {
                var result = responseMessage.Content.ReadAsStringAsync().Result;
                throw new Exception(result);
            }
        }