20153: Invalid Issuer Or Subject

The issuer or subject of the JWT provided to the Twilio API was invalid.

• The issuer is missing from JWT
• The issuer entity is suspended in Twilio.
• The subject is missing from JWT
• The subject entity is suspended in Twilio.
• The issuer and subject are not related.

• In case of Public Key Client Validation, make sure the account and the API key are valid and not suspended.
• For the details on JWTs used as part of Public Key Client Validation, see the documentation
• To check whether the JWT is structurally correct, you can use the tools available at jwt.io.