List all billing groups

{
    "data": [
        {
            "created_at": "2019-10-15T10:07:15.527Z",
            "deleted_at": null,
            "id": "f5586561-8ff0-4291-a0ac-84fe544797bd",
            "name": "My billing group name",
            "organization_id": "f1486bae-f067-460c-ad43-73a92848f902",
            "record_type": "billing_group",
            "updated_at": "2019-10-15T10:07:15.527Z"
        }
    ],
    "meta": {
        "page_number": 2,
        "page_size": 25,
        "total_pages": 3,
        "total_results": 55
    }
}