curl --request POST \
  --url "https://siteadresiniz.example/Files/Controllers/ControllersAll.php?main=Widgets&container=WidgetsAddController" \
  --header "X-API-Key: $ZONELY_API_KEY" \
  --form 'title=ALAN_DEGERI' \
  --form 'widget_type=ALAN_DEGERI' \
  --form 'area=ALAN_DEGERI' \
  --form 'is_passive=ALAN_DEGERI' \
  --form 'custom_html=ALAN_DEGERI'

const form = new FormData();
form.append('title', '<string>');
form.append('widget_type', '<string>');
form.append('area', '<string>');
form.append('is_passive', '<string>');
form.append('custom_html', '<string>');

const options = {method: 'POST', headers: {'X-API-Key': '<api-key>'}};

options.body = form;

fetch('https://siteadresiniz.example/Files/Controllers/ControllersAll.php', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));