Getting 500 error in Post Request using "Request HTTP" Activity

Hi all,

I wanted to post a data to an api using uipath request http activity.

i m giving the json in correct format .

json from uipath json

gicing the required header content type in both way which i saw on forum
in body format and in headers but still i m getting 500 error

while same thing is working fine when tried with postman

attching the xaml file.

plaese suggect thats wrong in thisPassingJsonStringFromAssign.xaml (6.7 KB)