curl -i 'http://egroupwareserver/egroupware/groupdav.php/j.fischer/calendar/148056.ics' -H "Accept: application/pretty+json" -H "Authorization: Basic ....SECRET...."
HTTP/1.1 200 OK
Server: openresty
Date: Fri, 29 Aug 2025 05:51:05 GMT
Content-Type: application/jscalendar+json;type=event;charset=utf-8
Content-Length: 739
Connection: keep-alive
Expires: Thu, 19 Nov 1981 08:52:00 GMT
X-Dav-Powered-By: EGroupware 23.1.011 CalDAV/CardDAV/GroupDAV server
Content-Encoding: identity
ETag: "148056:0:1756446431"
Schedule-Tag: "148056:0"
Cache-Control: maxage=1
Pragma: public
X-WebDAV-Status: 200 OK
X-Served-By: egroupwareserver

{
    "@type": "Event",
    "prodId": "EGroupware Calendar 23.1.011",
    "uid": "urn:uuid:a2ba4274-25f5-45b1-927d-1a4448a1c55f",
    "created": "2025-08-29T05:47:11Z",
    "updated": "2025-08-29T05:47:11Z",
    "title": "Test 25th",
    "start": "2025-08-29T10:00:00",
    "timeZone": "Europe/Berlin",
    "duration": "PT1H",
    "participants": {
        "64532": {
            "@type": "Participant",
            "name": "Jan Fischer",
            "email": "j.fischer@huettinger.de",
            "kind": "individual",
            "roles": { "chair": true },
            "participationStatus": "accepted"
        }
    },
    "status": "confirmed",
    "priority": 5,
    "categories": { "Berufsschule": true },
    "privacy": "public"
}