public HttpResponseMessage GetNonce()
        {
            ATISMobileWebApi WebAPi = new ATISMobileWebApi();
            try
            {
                //تایید اعتبار کلاینت
                WebAPi.AuthenticateClientGetNonce(Request, ATISMobileWebApiLogTypes.WebApiClientNonceRequest);

                var InstanceConfiguration = new R2CoreInstanceConfigurationManager();
                var InstanceSoftwareuser = new R2CoreInstanseSoftwareUsersManager();
                var InstanceAES = new AESAlgorithmsManager();
                var Content = JsonConvert.DeserializeObject<string>(Request.Content.ReadAsStringAsync().Result);
                var MobileNumber = InstanceAES.Decrypt(Content.Split(';')[0], InstanceConfiguration.GetConfigString(R2CoreConfigurations.PublicSecurityConfiguration, 3));
                var nonce = InstanceSoftwareuser.GetNonceforSoftwareUser(new R2CoreSoftwareUserMobile(MobileNumber));
                HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.OK);
                response.Content = new StringContent(JsonConvert.SerializeObject(nonce), Encoding.UTF8, "application/json");
                return response;
            }
            catch (Exception ex)
            { return WebAPi.CreateErrorContentMessage(ex); }
        }