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

let url = 'https://api.coralogix.com/mgmt/openapi/v1/rule-group-sets';

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));

{
  "sets": [
    {
      "id": "<string>",
      "groups": [
        {
          "name": "<string>",
          "interval": 123,
          "limit": "<string>",
          "rules": [
            {
              "record": "<string>",
              "expr": "<string>",
              "labels": {},
              "lastEvalDurationMs": "<string>"
            }
          ],
          "lastEvalAt": "<string>",
          "version": 123,
          "id": "<string>"
        }
      ],
      "name": "<string>"
    }
  ]
}