const options = {method: 'DELETE'};

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

{
  "success": true,
  "data": {
    "loggedOut": true
  }
}