Hi, @yusrakhatri!
On your Postman request, it seems to have some different headers, it’s pointing to 10… what is there?
And looking at it now, something came to my mind about a similar issue I had, I think Postman was assuming that the content-type was application/json, as for the fdk request, it would not. So try to add a header on your code:
“Content-Type”: “application/json”