{
  "purpose": "Offline signature test only. Fixed timestamp is intentionally stale; use a fresh timestamp for live requests. This is not a production credential.",
  "secret": "documentation-only-secret",
  "timestamp": "1760000000",
  "body": "{\"txId\":\"bet:8c1d3f2a-5b7e-4c69-a0d4-2e9f6b1c7a53\",\"playerId\":\"player-42\",\"amount\":500,\"currency\":\"USD\",\"kind\":\"bet\",\"betId\":\"8c1d3f2a-5b7e-4c69-a0d4-2e9f6b1c7a53\"}",
  "signature": "5a409c37866145f0505662fc18747d92fb61c08c9bff78c1f404ad8779b9428d"
}