{
  "protocol_version": "v1",
  "request_id": "req-response-1",
  "timestamp_ms": 1700000002000,
  "result_code": "ok",
  "payload": "response-payload",
  "payload_hash_hex": "2a9afa6f5873bca916cef860bf4902d5a665b1f01e832729eccccefe3424ea88",
  "expected_canonical_bytes_hex": "1267616c6178792d726573706f6e73652d76310276310e7265712d726573706f6e73652d310000018bcfe56fd0026f6b202a9afa6f5873bca916cef860bf4902d5a665b1f01e832729eccccefe3424ea88",
  "private_key_seed_hex": "0404040404040404040404040404040404040404040404040404040404040404",
  "public_key_base64": "ypOsFwUYcHHWe4PH/w7+gQjo7EUwV113JoeTM9vavnw=",
  "expected_signature_hex": "c9a1b79e602b7557c13d3554cd925be555ba0c5725d81c9baea75bee4693eb6f783e6654af9adfa589b93cf762417deaf7e5e3009d00ea8029c0de8996927b0e"
}