{
  "keyId": "notify-dev-hmac-001",
  "secret": "ZGV2ZWxvcG1lbnQtc2lnbmluZy1rZXktZm9yLXRlc3Rpbmctb25seQ==",
  "algorithm": "HMACSHA256",
  "note": "Development-only HMAC key for DSSE signing. DO NOT use in production. Secret is base64 of 'development-signing-key-for-testing-only'."
}