{
  "manageEntity": {
    "action": "Save",
    "entityId": "2031682684",
    "entityType": "Track",
    "nonce": "0xfa6262b43592d4e7e7ab09f72610250ea77902ea5856f5116b21a43f0cc42992",
    "signature": "0x031ec8cd9671ce04fdfdc957b4aa821cbeb6ca92455476d59b5f02405afd6dd67692d7945fe3266477e7fc487e05916e235b979a88f1a5407088bb91552b74cf1c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}