{
  "manageEntity": {
    "action": "Save",
    "entityId": "1044930839",
    "entityType": "Track",
    "nonce": "0x31a8f245d5390e65a56261a3693e5689cc61a797448d6e4b6a00236ea38234f3",
    "signature": "0xf27d825c667d7bb68eea43cdda28a53449e54860a660c18c1a6256586d2152a62b67aaa81b23651c2120b013d60ec1fe4e54d30fe4ed8ac228ba62b955d33ce31c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}