title: unexpected 's' in postman on sending Webmethod
body: <p>Integrating a payment Checkout <code>Stripe</code>. 
  Used JavaScript Stripe handler, to apply Stripe charge on the transaction.<br>
  After charging the customer, it returns <strong>token</strong>. Using this token we can proceed for Actual payment.  </p>
  
  <p>And here is the AJAX call to <em>Payment functionality</em>:</p>
  
  <pre><code>var StripeHelper =
      {
          payProceed: function (token) {
              try {
                  var _ajax = new AjaxHelper("/Services/Service.asmx/PaymentProceed");
                  _ajax.Data = "{token:" + JSON.stringify(token) + "}";
                  _ajax.OnInit = function () { PageHelper.loading(true); };
                  _ajax.OnSuccess = function (data) {
                      console.log(data.d);
                      PageHelper.loading(false);
                      window.location('/payment-success');
                  };
                  _ajax.Init();
              }
              catch (e) {
                  PageHelper.loading(false);
              }
          }
      }
  </code></pre>
  
  <p>Here is Web Method on my <strong>TEST server</strong>, which passes token to Stripe server:</p>
  
  <pre><code>[WebMethod(EnableSession = true)]
      public string PaymentProceed(string token)
      {
          Session["PAYMENT_MODE"] = PaymentContants.PaymentVia.Stripe;
          var myCharge = new StripeChargeCreateOptions();
          myCharge.AmountInCents = 100;
          myCharge.Currency = "USD";
          myCharge.Description = "Charge for property sign and postage";
          myCharge.TokenId = token;
          string key = "sk_test_Uvk2cH***********Fvs"; //test key
  
          var chargeService = new StripeChargeService(key);
          StripeCharge stripeCharge = new StripeCharge();
          //Error is coming for below line --&gt;
          stripeCharge = chargeService.Create(myCharge);
          //No token found
  
          return stripeCharge.Id;
      }
  </code></pre>
  
  <p>If I POST AJAX call on POSTMAN, it shows   </p>
  
  <blockquote>
    <p><strong>unexpected 's' in JSON</strong>.  </p>
  </blockquote>
  
  <p>What it means in general, and in this case specifically?</p>