List shared line groups

{
    "next_page_token": "hkdsfghdj3hef",
    "page_size": 30,
    "shared_line_groups": [
        {
            "display_name": "Test Shared Line Group",
            "extension_number": 123,
            "id": "sdgfhdser83velit",
            "phone_numbers": [
                {
                    "id": "min4glt",
                    "number": "46835635784",
                    "status": "available"
                }
            ],
            "site": {
                "id": "dgfgfgh433",
                "name": "San Jose Site"
            },
            "status": "active"
        }
    ],
    "total_records": 1
}