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

let url = 'https://api.coralogix.com/mgmt/openapi/v2/datausage/spanscount?dateRange.fromDate=SOME_STRING_VALUE&dateRange.toDate=SOME_STRING_VALUE&resolution=SOME_STRING_VALUE&filters.application=SOME_ARRAY_VALUE&filters.subsystem=SOME_ARRAY_VALUE';

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));

{
  "result": {
    "spansCount": [
      {
        "timestamp": "2021-01-01T00:00:00.000Z",
        "successSpanCount": 100,
        "errorSpanCount": 10,
        "lowSuccessSpanCount": 50,
        "lowErrorSpanCount": 5,
        "mediumSuccessSpanCount": 200,
        "mediumErrorSpanCount": 20
      }
    ]
  },
  "error": {
    "code": 123,
    "message": "<string>",
    "details": [
      {
        "@type": "<string>"
      }
    ]
  }
}