{
      &quot;to&quot;:&quot;REGISTRATION_ID&quot;,  // &quot;to&quot; replaces &quot;registration_ids&quot;
      &quot;message_id&quot;:&quot;m-1366082849205&quot; // new required field
      &quot;data&quot;:
      {
          &quot;hello&quot;:&quot;world&quot;,
      }
      &quot;time_to_live&quot;:&quot;600&quot;,
      &quot;delay_while_idle&quot;: true/false
  }
  &lt;/gcm&gt;
&lt;/message&gt;
</pre>

<p>Here is an XMPP stanza containing the ACK/NACK message from CCS to 3rd-party server:
</p>
<pre>