{
  "manageEntity": {
    "action": "Save",
    "entityId": "61939",
    "entityType": "Track",
    "nonce": "0x80573d4076d86979387a2e76c42c1b7c04abaf7e737535227d11f99b2b3b4714",
    "signature": "0x19fcc466d1c7de8e6d3bbcbe28c54b13d4e2d0dd02703aa1d38bd3e1ec962dba731b0780e4da90496b20815b3fbff573280b30df2131e7dd121768b0ac78a7d31b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}