test.json

{
    "type": "object",
    "properties": {
        "username": {
            "type": "string",
            "minLength": 3,
            "maxLength": 15
        },
        "age": {
            "type": "integer",
            "minimum": 0,
            "maximum": 120
        },
        "email": {
            "type": "string",
            "format": "email"
        },
        "is_subscribed": {
            "type": "boolean"
        },
        "favorite_numbers": {
            "type": "array",
            "items": {
                "type": "integer"
            },
            "minItems": 1,
            "maxItems": 5
        },
        "profile": {
            "type": "object",
            "properties": {
                "bio": {
                    "type": "string",
                    "maxLength": 150
                },
                "website": {
                    "type": "string",
                    "format": "uri"
                }
            },
            "required": [
                "bio"
            ]
        }
    },
    "required": [
        "username",
        "age",
        "email",
        "is_subscribed",
        "favorite_numbers",
        "profile"
    ]
}