{
  "manageEntity": {
    "action": "Save",
    "entityId": "11645482",
    "entityType": "Track",
    "nonce": "0x1670918546bf9ed930ed033ad3c03266d3b3e69dca1d8632859c7f2a6a5aef12",
    "signature": "0xf285c4eee36f37fec927922be2dde6c37ccd7d24cd8533406c387964a33ed60b03639dae13835a346f44d637a12282358a8dce0837371f94cd3e74ab700ca7a81c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}