{
  "manageEntity": {
    "action": "Save",
    "entityId": "1464202657",
    "entityType": "Track",
    "nonce": "0xb10d680c772e49e1cf0e22f9382c226532d0348f51f2070afd3cb0a5163a6ce1",
    "signature": "0xf83d91513f980ffc11e241c68f6544ee8b40936546499c4960e8f4f1cd9225f163ca5b68c841f6387e101a1cbc9401b1c284d9662abd21ac72781a3d1581be991c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}