title: Swagger POST with json body
body: <p>I am trying to write static .json file of server response using swagger. I'm stuck with post body and do not know how to describe it. It looks pretty much similar to Grooveshark api's where you have one page and different post parameters.</p>
  <p>So, given grooveshark example (<a href="http://developers.grooveshark.com/docs/public_api/v3/" rel="nofollow noreferrer">http://developers.grooveshark.com/docs/public_api/v3/</a>)</p>
  <p>Page that takes queries:</p>
  <pre><code>http://api.grooveshark.com/ws3.php?sig=cd3ccc949251e0ece014d620bbf306e7
  </code></pre>
  <p>POST body:</p>
  <pre><code>{
    'method': 'addUserFavoriteSong',
    'parameters': {'songID': 0},
    'header': {
      'wsKey': 'key',
      'sessionID': 'sessionID'
    }
  }
  </code></pre>
  <p>How can I describe this with swagger?</p>