{
  "manageEntity": {
    "action": "Save",
    "entityId": "247882355",
    "entityType": "Track",
    "nonce": "0x5ffd39fc44fe9ae7690d3657e9f2565d5ff4b03b03bc1cc5d53f979431ca5a73",
    "signature": "0x188a4e94ae19414da4c43d9435c23c4c0a76de5010b99e33f57b72bd9cf7c0a81d53f895b8bed062149c6089d4dd5348926747d55edfb9f4d24058d70700f29b1c",
    "signer": "0x1a08B067c1Fb3c46dDA49f6d1f590e00DC5baFCd",
    "userId": "60095054"
  }
}