Encoding UTF-8 Javascript tracker , Persian WebPage

Hi everybody,

I want to track Persian web page add data is not encoded in UTF-8 :

the data which is pass is :

title":“پخش کننده خودرو بي ال اس مدل BLS-MP2527BT”

but the valid data is :

title:“پخش کننده خودرو بي ال اس مدل BLS-MP2527BT”

what should I do to get this data correctly ?