{
  "header": {
    "alg": "RS256",
    "typ": "JWT",
    "kid": "thainotary-agent-2026"
  },
  "payload": {
    "iss": "https://xn--82czbx2bczd4fl8a.online",
    "sub": "agent-client-abc123",
    "aud": "ChatGPT/gpt-5",
    "iat": 1767225600,
    "exp": 1798761600,
    "jti": "rcpt_01HZXYZ7K3PQ2EXAMPLE",
    "act": {
      "type": "appointment.create",
      "capability": "create_appointment",
      "capabilityVersion": "2.0.0",
      "resourceId": "appt_2026_0042",
      "statusCode": 201,
      "scope": "agent:appointment.create"
    },
    "proof": {
      "requestHash": "sha256:7a1f...example",
      "responseHash": "sha256:c84e...example"
    }
  },
  "signature": "<base64url RS256 signature>"
}