{
  "manageEntity": {
    "action": "Save",
    "entityId": "1738275805",
    "entityType": "Track",
    "nonce": "0xc71520a8a8937ab4c7bd19b2ccc6897fd4f603f6ca03819b05297f71dbb59ef4",
    "signature": "0x46d8459347514f8c0ddc7a1c2daf75ca4971194b5416369b72a91837f0a68e16596f4f47dd39123dbf4610449ca84fe841613b658d832b2459b1ea58373926b41c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}