{
  "manageEntity": {
    "action": "Save",
    "entityId": "1791785759",
    "entityType": "Track",
    "nonce": "0xa77e521b437ee5d227046185797b5662cd576d93b9e7ff957da6c4561ffdfed6",
    "signature": "0xaf573a271fe14a41bf622db108099f702f7c1bec7f1d236fd527e94528230dbb67dd1f24fd10e44dc6d4dd94e4ddd228a160695faf64ace8dcb32d0f7c4842f31b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}