{
  "manageEntity": {
    "action": "Save",
    "entityId": "2016670495",
    "entityType": "Track",
    "nonce": "0xda1b20730f3e7227872558845458fcd2710afcda83eaed4e50a624b710ac832b",
    "signature": "0x02e531f4d91d400932b3b7913f9edf2d5980e333399a4294c5665372d3167b46436d25c9c3a761db2f5c81b503c042a95a29ad710ca674e3503582caddd4ce271b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}