{
  "manageEntity": {
    "action": "Save",
    "entityId": "1001108091",
    "entityType": "Track",
    "nonce": "0x72a3e635f5af4b3dc0a964dd6905a7e7dff753a19c0018c2980fa77f8e72c504",
    "signature": "0xf32e9843445ba72751560bb64b06fe1ed068090bc26cd2876bb502e2c05670d275ee6802c8b160208f6e3eb3734b3ffc34d7b18e2b7fc080bc7e9a11fd7ee62d1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}