Required. A fully qualified identifier of the pass that the issuer wants to notify the pass holder(s) about. Formatted as .

Required. The issuer endpoint URI the pass holder needs to follow in order to receive an updated pass JWT. It can not contain any sensitive information. The endpoint needs to authenticate the user before giving the user the updated JWT. Example update URI https://someissuer.com/update/passId=someExternalPassId

Required. The JWT signature of the updated pass that the issuer wants to notify Google about. Only devices that report a different JWT signature than this JWT signature will receive the update notification.