import Telnyx from 'telnyx';

const client = new Telnyx({
  apiKey: 'My API Key',
});

const simCardDataUsageNotifications = await client.simCardDataUsageNotifications.list();

console.log(simCardDataUsageNotifications.data);

{
  "data": [
    {
      "id": "79228acc-3f08-4e70-ac68-cb5aae8b537a",
      "sim_card_id": "b34c1683-cd85-4493-b9a5-315eb4bc5e19",
      "threshold": {
        "amount": "2048.0",
        "unit": "MB"
      },
      "created_at": "2018-02-02T22:25:27.521Z",
      "updated_at": "2018-02-02T22:25:27.521Z"
    }
  ],
  "meta": {
    "page_number": 2,
    "page_size": 25,
    "total_pages": 3,
    "total_results": 55
  }
}