{
  "manageEntity": {
    "action": "Save",
    "entityId": "694689053",
    "entityType": "Track",
    "nonce": "0x02ddd0454d40d0f7753155f54b3349b6012a04973e8c8f63545318e6e53c0487",
    "signature": "0xb5c931ff4faaf970f37ee20a4a748c5c3bbfc9c5cd894a12c19454de256bd7563d2219505876f92e899c15f25336dd9fa3b704a069505344136840412a0adf151c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}