{
  "manageEntity": {
    "action": "Save",
    "entityId": "1755131005",
    "entityType": "Track",
    "nonce": "0x812acd51486ef0749c441af936015628a10351f645afc7121840b41ea7b58fa5",
    "signature": "0x40df8165e0c242ccf5cdbdc67dacc7cc222b18008ccd5a83330a0aa94c7f5e5b2e8f5a2bfc08514ff5bd650c0b0d0f42adf5d017995c01f526a62bf254c225891b",
    "signer": "0x95f852A4bf72042104896ef4Ca53c0429CF8d4E1",
    "userId": "797583457"
  }
}