Webhook Sends Entire Page?

I’ve been looking for a while now and can’t seem to find more info about this. I’m writing the data sent through the webhook into a txt file on my server. It seems to contain the entire Patreon page, including posts and html. All in a large json array. The test I triggered was “create member”. Why is it sending so much data and how am I to parse it reliably when the json will change every time we add a post since its sending all info.

My end goal is to write member data to MySQL so our app can check for subscription status. Seemed a simpler solution than writing api calls to patreon into the app itself.