{
  "manageEntity": {
    "action": "Save",
    "entityId": "1493045156",
    "entityType": "Track",
    "nonce": "0x4477d1a0e5fe09261df77044c195a68478b93221b376db3c49738dd4faf21c32",
    "signature": "0xb95433faad45b31ee13387e58f6a0c7d04c2b17c23a49e2e1f778d90fb9228824dfb76ad662485195e5aacd201ed479255dd1451bf54b4f924ec69f783f3b2941b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}