api.v0alpha.ListCannedMessageGroupsRes(ListCannedMessageGroupsRes)

response holding the list of CannedMessageGroups

{
    "canned_message_groups": [
        {
            "canned_message_group_id": "string",
            "name": "string",
            "description": "string",
            "date_created": "1s",
            "last_updated": "1s"
        }
    ]
}