Shrink visionary slots

curl --request POST \
  --url https://api.fluxer.app/v1/admin/visionary-slots/shrink \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "target_count": 50000
}
'

{
  "success": true
}