{
  "manageEntity": {
    "action": "Save",
    "entityId": "98024118",
    "entityType": "Track",
    "nonce": "0xd4cbd29732a118a6d27b4f8bedec3e93df47614fd817e4f9054fb5093986be50",
    "signature": "0x2b5b0dcc9f924f5c74db25cd69b1689cdec989fcf3c2d20bfcd7ad3c6509b1ff2e2c57e7e9c7ec2e37aef83d3450e48456444ee43d9fcb798fc803d750dc9d8c1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}