{
  "manageEntity": {
    "action": "Save",
    "entityId": "829969404",
    "entityType": "Track",
    "nonce": "0xb870534a2a0dde6214fb242aa799a64040b8ed584c2d92b95908072b0b4d1504",
    "signature": "0x93bfc6779f10c0d7faa93310a3d2707cdf93c1555df5bb9e4c38641b7653be134e2aa0c74c58aece6fcc5a6d7b0f5bbff16438db0f9fef15f3dd834596b4260d1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}