const fetch = require('node-fetch');

let url = 'https://api.coralogix.com/mgmt/openapi/dataplans/data-usage/v2/spans:count';

let options = {method: 'GET', headers: {Authorization: 'Bearer <API_KEY>'}};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error('error:' + err));

{
  "spansCount": [
    {
      "errorSpanCount": 10,
      "lowErrorSpanCount": 5,
      "lowSuccessSpanCount": 50,
      "mediumErrorSpanCount": 20,
      "mediumSuccessSpanCount": 200,
      "successSpanCount": 100,
      "timestamp": "2021-01-01T00:00:00.000Z"
    }
  ]
}