Setting up OBS to for Webcam Streaming

Good day all,
Has anyone else been successful at using a Sony DSLR as a wireless webcam? Perhaps I am making it too complicated. My searches shows that need to use the playmemories app on the camera, connect to the imaging edge remote viewer on the PC, then send the resultant imaging stream through OBS to the server.

OBS askes for a Stream Key to accomplish this. I am getting lost. Anyone else have luck with this?

Is there an easier way, without having to find an HDMI streaming card?

Thank you, Jack