title: ajax post call resulting in 422 error
body: <p>I am trying to POST data on a form at a site (where I've registered) the following is my code:</p>
  
  <pre><code>$.ajax({
           url:'https://api.contentstack.io/v2/content_types/the_lazy_goose/entries/',
           type: "POST",
           contentType: "application/json",
           data: JSON.stringify({
                  title: "John", 
                  url: "2pm", 
                  multi_line: "Random Text using Post call"
              }),
          headers:{
                      access_token: 'xxxxxxxxxxx',
                      api_key: 'xxxxxxxxx'
                  },
  
          success: function() {
             alert("success");
          },
          error: function() {
                 alert("ERROR");
              },
      });
  </code></pre>
  
  <p>This results in 422 (Unprocessable Entity), not sure where am going wrong.
  *I've gone through <a href="http://www.restpatterns.org/HTTP_Status_Codes/422_-_Unprocessable_Entity" rel="nofollow">http://www.restpatterns.org/HTTP_Status_Codes/422_-_Unprocessable_Entity</a> and understand that 'request_entity' &amp; 'syntax of request' are fine</p>
  
  <p>The site <a href="https://contentstackdocs.built.io/rest/api/content-management-api/" rel="nofollow">https://contentstackdocs.built.io/rest/api/content-management-api/</a> seem to be supporting Json data</p>