[
    {
        "id": 123456,
        "age": "thirty",
        "email": "invalid-email-format",
        "created_at": "not-a-date",
        "is_active": "yes",
        "tags": ["developer", 123],
        "address": {
            "street": 789,
            "city": "Anytown"
        },
        "preferences": {
            "notifications": "yes",
            "theme": "dark",
            "items_per_page": "unknown"
        }
    },
    {
        "id": "223e4567-e89b-12d3-a456-426614174001",
        "name": null,
        "age": 35,
        "email": "jane.smith@example",
        "created_at": null,
        "is_active": false,
        "tags": ["manager", false],
        "address": {
            "street": "456 Elm St",
            "postal_code": "67890"
        },
        "preferences": {
            "notifications": false,
            "theme": null,
            "items_per_page": 10
        }
    },
    {
        "id": null,
        "name": "Alice Johnson",
        "age": null,
        "email": "alice.johnson@example.com",
        "created_at": "2023-03-10",
        "is_active": "yes",
        "tags": null,
        "address": {
            "street": "789 Oak St",
            "postal_code": "10112"
        },
        "preferences": {
            "notifications": true,
            "theme": "light",
            "items_per_page": "fifteen"
        }
    }
]