GroupItem(GroupItem)

{
    "id": 0,
    "title": "string",
    "cover_url": "string",
    "summary": "string",
    "category": {
        "id": 0,
        "name": "string",
        "slug": "string"
    },
    "members_count": 0,
    "last_activity_at": "2019-08-24T14:15:22.123Z",
    "joined": false
}