{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116791",
    "entityType": "Track",
    "nonce": "0x2ed2e59ca50704110c83fab8c6e3e2fa2a679fde7066066a7b57c6660378d89f",
    "signature": "0xbe8708ea0662f6f6c44bb2af56de67f2dd6423477fb27ad75b78ac38338b555b68748e93eb111f45ff9b768aec88e5b7b95f958fbd444980e887d78893546f891c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}