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

let url = 'https://api.coralogix.com/mgmt/openapi/v3/events:statistics?filter.timestamp.from=SOME_STRING_VALUE&filter.timestamp.to=SOME_STRING_VALUE&filter.cxEventTypes=SOME_ARRAY_VALUE&filter.cxEventKeys=SOME_ARRAY_VALUE&filter.cxEventMetadataFilters.operator=SOME_STRING_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));

{
  "cxEventMetadataFieldStatistics": {}
}