{
  "manageEntity": {
    "action": "Save",
    "entityId": "952731240",
    "entityType": "Track",
    "nonce": "0x7cc52c41e70c706f44e6d793ad347ef6c75b635ac713df3a31cd2fa6a01e30eb",
    "signature": "0x71166b30afc2000bcacb065f9abaec015e76fe13beacfef8a132781a4d8879ea25374a70fa6da709c03cf348a52c61eb87a1124b940c6d19cd0cffaf0d3c0cd81b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}