{
  "manageEntity": {
    "action": "Save",
    "entityId": "1317898179",
    "entityType": "Track",
    "nonce": "0xf1a16caf36bd7c4003832faf247052bf8ffafe5f477099451d3942a86c9e17ad",
    "signature": "0x4ad8b2c0fa50bde278d9f0aed91a6ea129a7e0241a2249046e0065471640f56d7634e43ba5d2d11e3da3df1309e89508b5e40afd82f6d6323180d535df7ab5a51c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}