{
  "schema": {
    "fields": [
      {
        "mode": "NULLABLE",
        "name": "name",
        "type": "STRING"
      },
      {
        "mode": "NULLABLE",
        "name": "surname",
        "type": "STRING"
      },
      {
        "mode": "NULLABLE",
        "name": "age",
        "type": "INTEGER"
      },
      {
        "mode": "NULLABLE",
        "name": "boolean_val",
        "type": "BOOLEAN"
      }
    ]
  }
}
