{
  "manageEntity": {
    "action": "Save",
    "entityId": "427376185",
    "entityType": "Track",
    "nonce": "0x596b39e6e55f8198794ecd13d2a995ead139a9e57faf78225a5c9871b0dfb410",
    "signature": "0xb124f4e72475fb7ed6a55f5bd895124a164b8878d490cb99f2c341011e5ca6f12ec8e090bbb4f0d41b5a7d8cdbef2df74fa8760541734b1860c7d709eaa0447d1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}