{
  "manageEntity": {
    "action": "Save",
    "entityId": "1936821384",
    "entityType": "Track",
    "nonce": "0xb2e705e21e9a415342af3e94a9506f8ac34bcfdf79e67de978da20d54c22a275",
    "signature": "0x1397f1bc5621ce09b49051e7958fb79a1e8d656bd405dc4cddb1f3d078e7b37c14948b9a7885a400eb3bec5a65e69828103eb08bd85dff352de89f4aac31fff81b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}