{
    "cardsV2": [
        {
            "card": {
                "sections": [
                    {
                        "header": "test-section",
                        "widgets": [
                            {
                                "buttonList": {
                                    "buttons": [
                                        {
                                            "text": "cool button",
                                            "onClick": {
                                                "openLink": {
                                                    "url": "https://github.com/chriseaton/google-chat-cards"
                                                }
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                ],
                "header": {
                    "title": "test"
                }
            }
        }
    ]
}