[
    {
        "dept": "accounting",
        "employees": [
            {
                "firstName": "John",
                "lastName": "Doe",
                "age": 23
            },
            {
                "firstName": "Mary",
                "lastName": "Smith",
                "age": 32
            }
        ]
    },
    {
        "dept": "sales",
        "employees": [
            {
                "firstName": "Sally",
                "lastName": "Green",
                "age": 27
            },
            {
                "firstName": "Jim",
                "lastName": "Galley",
                "age": 41
            }
        ]
    }
]