{
  "manageEntity": {
    "action": "Save",
    "entityId": "88008",
    "entityType": "Track",
    "nonce": "0x1858c56a4ec1ebc86e5be9ac5902713c6207d64fefb41222265d7814852333a0",
    "signature": "0x560d3c0306eee27029cf2ace83a34d5f924a8ffab0d8bd200ea2b8bb55050cbb6b4cfd8ffba33acc2e09f5c3542efac75dd4f53ddaba678244506ea6185478ed1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}