The issuer of the key that was used to validate the JWT signature.
Note that the key issuer is not necessarily the same as the "iss"
claim in the JWT payload. Rather, it is the issuer used in the
set_jwt_issuer proposal.
The parsed JWT payload.
A string indicating which policy accepted this request,
for use when multiple policies are listed in the endpoint
configuration of app.json, or list-of-strings to identify
an all_of policy.
The parsed JWT header.