{
  "manageEntity": {
    "action": "Save",
    "entityId": "1340524962",
    "entityType": "Track",
    "nonce": "0xc1253eebca82da89ba7f00c645312b72cd917ac11e14af20ba19ba38d4a5c296",
    "signature": "0x3ae4e22ac77c13eb7cea1a23923fe91a840388b41ee510acc24646084b6cda280d9b13458cacc29c8753a12f9e8fc3ef374fffe464522fcea813639a85c9b7301b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}