Ping
----

The Ping event is generated automatically every 60 seconds. This means
that even in the absence of any other activity, the event polling HTTP
request will return within a minute.

.. code-block:: json

    {
        "id": 46,
        "type": "Ping",
        "time": "2014-07-13T21:13:18.502171586+02:00",
        "data": null
    }
