{
  "manageEntity": {
    "action": "Save",
    "entityId": "999113",
    "entityType": "Track",
    "nonce": "0xbdbf31953a668bdcea3d6edb4d27398f241a59c3e37e3e881119006e94083869",
    "signature": "0x53f6eb05a265a3423cfe4607dad89c2d403971f8f3b6453a379c337019c2d02b07f48a4b23a9bc520b129ae32102f45ee0a30f39b87f2bdb2fc88bbd835b20b11b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}