Unknown entity * shows up in entity list and logs all actions of all other entities

I have been wondering about an entity in my Home Assistant configuration (docker), that is simply a “*”. It seems to log all actions from all other entities in my setup.

It also shows up as an ‘Active Listener’ in the Developer Tools > Events page.
image

I guess my question is, is it supposed to be there? Or is it a side-effect of something else that I should look into more? Please ask if you need more screenshots or information - happy to provide.

Yes the listener is supposed to be there. Why?

No idea.

The entity I’ve never seen.