title: Parse returns empty 400 to POST request
body: <p>Every time I send a pretty minimal request to Parse API:</p>
  
  <pre><code>POST /1/some_url HTTP/1.1
  X-Parse-Application-Id: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  X-Parse-REST-API-Key: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  Content-Type: application/json
  
  {"data":"value"}
  </code></pre>
  
  <p>I get the same empty response:</p>
  
  <pre><code>HTTP/1.1 400 BAD_REQUEST
  Content-Length: 0
  Connection: Close
  </code></pre>
  
  <p>And ideas about possible errors on my part?</p>