{
  "manageEntity": {
    "action": "Save",
    "entityId": "9018394",
    "entityType": "Track",
    "nonce": "0xaac11fc747fe8b97a8943e31e1a150649d620282427c23022178a736854cfda6",
    "signature": "0x4fd73ffa099cffe4808520a26a183cafce27560f74f30b1cc557d2e368017dd72a087563ca63e7bfeed072eb9b27162eb4c1e6159bebd07f741a653f0007e8051c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}