{
  "manageEntity": {
    "action": "Save",
    "entityId": "1082381",
    "entityType": "Track",
    "nonce": "0x0485393259e3f20c16ee4d68513ebcffd5889ba03703620a195c6169b0900037",
    "signature": "0x507717cf1e0545a9dd9f455ecac0140800f5609c21fd34095931a68b68b458416be47bf3522a50d5f6b5f36609f4dcb40bbed0849ffa79ef0ab38abf6d7d04b21c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}