curl --location --request GET 'https://slack.com/api/admin.usergroups.listChannels?usergroup_id=' \
--header 'token;'{
    "channels": [
        {
            "id": "C024BE91L",
            "name": "fun",
            "num_members": 34,
            "team_id": "T024BE911"
        },
        {
            "id": "C024BE91K",
            "name": "more fun",
            "team_id": "T024BE912"
        },
        {
            "id": "C024BE91M",
            "is_redacted": true,
            "name": "public-channel",
            "num_members": 34,
            "team_id": "T024BE911"
        },
        {
            "id": "C024BE91N",
            "name": "some more fun",
            "team_id": "T024BE921"
        }
    ],
    "ok": true
}