{
  "mandate_id": "M-SYN-0004",
  "request_id": "5fa51e0e0a6c5569",
  "action": "write",
  "resource": "synthetic://archive/q4",
  "ttl_minutes": 30,
  "issued_at": "2026-11-11T11:45:00Z",
  "expires_at": "2026-11-11T12:10:00Z",
  "nonce": "syn-nonce-0004",
  "one_time": true,
  "signer_role": "security_owner",
  "signer_name": "Synthetic Human Owner",
  "signed_by_human": true,
  "signature_note": "Synthetic fixture. Stands in for a real out-of-band human signature; not authenticated."
}