{
  "manageEntity": {
    "action": "Save",
    "entityId": "1113306",
    "entityType": "Track",
    "nonce": "0x1eeb9c35a247e862d32210ece670689954e6d08cb5caefaf1e9c30fda1367a72",
    "signature": "0x899867323a8061177b2db3f3e2420b65c2bab38326b9360094a97ee5e64bd69528ce51e0e7716dead42cbc263e49c6c9f3d87a40772d2333b986d2f3ced1174d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}