{
  "manageEntity": {
    "action": "Save",
    "entityId": "1052894",
    "entityType": "Track",
    "nonce": "0x0391df5f2de133b836122c962e574249a96c1ab8837436feba145e69dc0f30f5",
    "signature": "0x194f2612a73b72f0f80a106886a52584b4b278c0fc57bd6a3a05b37071eb525076a1bffdbb6f390b1334c9f03f3228da2d45112299c421e64e8ebb83cf7b1ed11b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}