{
  "manageEntity": {
    "action": "Save",
    "entityId": "986510995",
    "entityType": "Track",
    "nonce": "0xb0ef504d79e7a8c6a249dfc43c18eeeccd9985d75ed362091320ef1e6ca7f0b1",
    "signature": "0x3eacaa7503147f7bfb1a8db0bff6db87239908ccf67afb21020dda17f375313829210414686b432c8142e64a4152b4d7b5c75a0b2c58905c5df7221cd513f7e41b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}