HTTP Sensor Logging

Is there a way to see what is being sent when something is posted to the http sensor endpoint? I had about a dozen wirelesstags that used a KumoApp to post when the temperature is updated. At some point in time, it stopped working.

I don’t know if it is the KumoApp (I can’t see what it sends) or if it is HA being picky about what it is sent.

If I use postman and construct everything perfectly, HA works. I need to see what the KumoApp is sending and see HA reject it (or see if KumoApp is even sending).