{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "type": "object",
    "properties": {
        "speaker": {
            "type": "object",
            "properties": {
                "firstName": {
                    "type": "string"
                },
                "lastName": {
                    "type": "string"
                },
                "email": {
                    "type": "string"
                },
                "postedSlides": {
                    "type": "boolean"
                },
                "rating": {
                    "type": "number"
                },
                "tags": {
                    "type": "array",
                    "items": {
                        "type": "string"
                    },
                    "additionalItems": false
                }
            },
            "additionalProperties": false,
            "required": [
                "firstName",
                "lastName",
                "email",
                "postedSlides",
                "rating",
                "tags"
            ]
        }
    },
    "additionalProperties": false,
    "required": [
        "speaker"
    ]
}