Receive and verify Google Cloud Pub/Sub push subscription webhooks. Use when setting up a Pub/Sub push endpoint, verifying the OIDC `Authorization: Bearer` JWT that Pub/Sub attaches to authenticated push subscriptions (iss, aud, email, email_verified), parsing the push envelope (`message.data` base6
Receive and verify Google Cloud Pub/Sub push subscription webhooks. Use when setting up a Pub/Sub push endpoint, verifying the OIDC `Authorization: Bearer` JWT that Pub/Sub attaches to authenticated push subscriptions (iss, aud, email, email_verified), parsing the push envelope (`message.data` base64, `message.attributes`, `messageId`, `publishTime`, `subscription`), securing an unauthenticated pu