const options = {method: 'GET'};

fetch('https://api.example.com/v1/regions/global/workflows/metrics', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "success": true,
  "data": {
    "totalRuns": 123,
    "successRate": 123,
    "averageDuration": 123,
    "activeRuns": 123,
    "failureRate": 123,
    "period": "<string>"
  }
}