{
  "manageEntity": {
    "action": "Save",
    "entityId": "1327860671",
    "entityType": "Track",
    "nonce": "0x2a79a68f2655b65df56dc16d355f66b4d3bd3eae6b31093724b4d5fe8062c868",
    "signature": "0xe849a4c4847c28939b4426e2d8882a17b66f44af8f9676f439f276001c08c961516bc93880bf7fdefc7f9dad33638fcd731604c711519e624664019bd2c8da431c",
    "signer": "0x95053e208ed4683dC71E3025336b339dc6C13f1B",
    "userId": "90610656"
  }
}