Claims sets. No signature was computed. Decoding was not required.

Worked
{"iss":"lab","aud":"notes","role":"member"}
Card mark: signature not checked

Activity
{"iss":"lab","aud":"notes","role":"admin"}
Card mark: signature not checked

A common signed compact form has three period-separated parts. Encrypted forms differ. This file contains only readable claims, not either compact form.
A readable claims set is not a verified signature.