curl --request POST \
  --url https://api.autoprintfarm.com/public/v1/skus/{id}/adjust \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "adjustment": 123,
  "reason": "<string>"
}
'

{
  "success": true,
  "data": {
    "id": "<string>",
    "previous_stock_level": 123,
    "adjustment": 123,
    "new_stock_level": 123,
    "is_low_stock": true
  }
}