curl --request POST \
  --url https://api.autoprintfarm.com/public/v1/orders/{id}/items/{itemId}/fulfill \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "quantity": 2
}'

{
  "success": true,
  "data": {
    "item": {
      "id": "<string>",
      "product_sku_id": "<string>",
      "sku": "<string>",
      "product_name": "<string>",
      "quantity": 123,
      "unit_price": 123,
      "total_price": 123,
      "quantity_fulfilled": 123,
      "fulfillment_status": "<string>",
      "notes": "<string>",
      "created_at": "<string>"
    },
    "order_status": "<string>"
  }
}