Power state from LG webOS Smart TV

Trying to figure out how to know if my LG TV is on or off using appdaemon, but I’m not sure what entity I can use. The only one I find for my TV is the actual media player and that seem to report state playing every 20 seconds. If I turn the TV off, it stops reporting the state at all, I would expect that it reported like stopped or something. Is there any other entity I should use? Or should I just give up and start pinging it instead (as I know it will only answer ping when on)?