Why is this hass.nabucasa.iot google action happening

Without anything (obvious) happening in the HA setup, or commands to google Assistant, below event is logged rather frequently.
id: light.den is a group in the light domain, containing 6 hue lights, of which I have a few others which don’t log the event at all. It is the only entity of the kind I added to cloud: config.

All my other light.groups are only manipulated in HA Lovelace, and my Hue lights don’t have the link via Homeassistant to Cloud.

It doesnt seem to be an error, but I was wondering why this is happening in the first place.

2020-03-13 15:42:29 DEBUG (MainThread) [hass_nabucasa.iot] Received message:
{'handler': 'google_actions',
 'msgid': 'b37545redacted75c41fcd6764',
 'payload': {'inputs': [{'intent': 'action.devices.QUERY',
                         'payload': {'devices': [{'customData': {'httpPort': None,
                                                                 'httpSSL': True,
                                                                 'proxyDeviceId': '49162c17aredacted4d01e8a',
                                                                 'webhookId': '090a1bredacted4eca3'},
                                                  'id': 'light.den'}]}}],
             'requestId': '139redacted972287'}}

2020-03-13 15:42:29 DEBUG (MainThread) [hass_nabucasa.iot] Publishing message:
{'msgid': 'b375457c-redactedc41fcd6764',
 'payload': {'payload': {'devices': {'light.den': {'brightness': 0,
                                                   'on': False,
                                                   'online': True}}},
             'requestId': '1399redacted72287'}}

If anyone would have a hint /lead/clue, I’d be grateful.
thanks!