{
  "manageEntity": {
    "action": "Save",
    "entityId": "4092750",
    "entityType": "Track",
    "nonce": "0x6a644a5c610d529a116bb07ef810f32fd4e560fdb55f836510606ef3523896fd",
    "signature": "0xe0d2761ad04e2eccb1e9e64819cca3ae106adf9e8cff4d4e041337d5b7d4e4692a135ee6ab7a1d814a9d9cb7d03df8fbe8a6d013b00d9253f2c663f23872210d1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}