[
    {
        "name": "John",
        "age": 30,
        "country": "USA",
        "pets": ["dog", "cat"]
    },
    {
        "name": "Alice",
        "age": 25,
        "country": "UK",
        "pets": ["rabbit"]
    },
    {
        "name": "Bob",
        "age": 40,
        "country": "Canada",
        "pets": []
    }
]