{
  "manageEntity": {
    "action": "Save",
    "entityId": "1318728133",
    "entityType": "Track",
    "nonce": "0xb99b8eb6d43197f86ccb382b300b8438ad8247234d74d55c52efe753f63a3f6b",
    "signature": "0x94941f6277c178bfae8c47f76aa1e2024613f7fd7c9e55a894df4a9ed0380c13664d8b8d1d99169c12383a7bbcf068e67c0c7903433d95236500a7d7986ba9161c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}