{
  "manageEntity": {
    "action": "Save",
    "entityId": "1784827159",
    "entityType": "Track",
    "nonce": "0xa40d002c7b471738142457b0de00d6463cfbe4acf4872a36d334b707ccfdb4d9",
    "signature": "0x3abc84b7f7c336483b69f027eaa69f3749510a5d4323b429e67947c4b99a011845b31ab99074f83c8df10d0718302ecd2ba77bf95197846281f4a50fb3855b381b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}