{
  "manageEntity": {
    "action": "Save",
    "entityId": "892252321",
    "entityType": "Track",
    "nonce": "0xbe7966c198dafae044b9829bcce83f0db4f829b632a9fd5d1fc5a3cd3edecf1e",
    "signature": "0x79157efedcc679ff1438c12bee34a9e2c6acdb73e9341ee7d6a083a6821fca5a1bb60f81c3ebdd3fc3d222d17c7ec8220e1a60a7731e1fa19ecea386438895321c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}