anchor.diff:  curl -X POST -H "Content-type: application/json" -d '{
     "interlocutor": {
       "distinct_id": "<span class="js-distinct-id"></span>",
  -    "first_name": "John",
  -    "last_name": "Doe",
  +    "username": "elon",
  +    "phone": "141812312345",
  +    "email": "elon@spacex.com",
  +    "first_name": "Elon",
  +    "last_name": "Musk",
       "gender": "male",
       "locale": "US",
  -    "profile_picture": "http://example.com/profile.jpg"
  -    "timezone": "Eastern Time (US & Canada)",
  +    "profile_picture": "http://spacex.com/elon.jpg",
  +    "timezone": "Pacific Time (US & Canada)"
     }
   }' 'https://api.dialoganalytics.com/v1/b/a925a32e/interlocutors?token=test'</pre>
   
  
positive.code:                 <td>
                    <strong>string</strong> <span class="label label-primary">Required</span>
                    <p>A unique user ID issued by the messenging platform. This enables the API to support <a href="/reference#idempotent-requests">idempotent requests</a>.</p>
                  </td>
                </tr>
                <tr>
  
negative.code:               </tr>
                <tr>
                  <td>
                    <i>locale</i>
                  </td>
                  <td>
  