json for bootstrap-calendar

how a json file can look like if you want toi use bootstrap-calendar:

````
{
    "success": 1,
    "result": [
        {% for notice in items %}
            {
                "id": {{ notice.id }},
                "title": "{{ notice.title|replace({ '"': '' }) }}",
                "url": "{{ url('rkbulletinmodule_notice_display', { 'id': notice.id }) }}",
                "class": "{% if notice.categories|length > 0 %}{{ notice.categories[0].category.display_name[app.request.locale]|default(notice.categories[0].category.name)|replace({ '"': '' }) }}{% endif %}",
                "start": {{ notice.eventStartDateTime.getTimestamp()*1000}},
                "end": {{ notice.eventEndDateTime.getTimestamp()*1000}}
            }{% if not loop.last %},{% endif %}
        {% endfor %}
    ]
}
````

Important is to make the getTimeStamp miliseconds