curl --request POST \
  --url https://v2.stopbars.com/airports/{icao}/links/bulk \
  --header 'Content-Type: application/json' \
  --header 'X-Vatsim-Token: <api-key>' \
  --data '{}'

{
  "success": true,
  "linked": 123,
  "unlinked": 123
}