{
  "manageEntity": {
    "action": "Save",
    "entityId": "1265149852",
    "entityType": "Track",
    "nonce": "0xd85da95e92cf4ab81b97ca18d3f71ed7c84957bcd6e572eccae050373fb839f3",
    "signature": "0x30deaa39f051e4bb428cecac289239a87c374ab25c1ac38c174ccd4e62602a6a473dbf0fedc9479a7c4e692a506ea5dd9c7edfd26834d12f1525b25642db03ad1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}