How to read JSON POST request body from portal in ngrest service

[Kumar]

Hi All,

I have tried the sample provided from following link,

http://localhost:9098/Calculator/add?a=2&b=3

Similarly, I want to pass add service arguments in request body from postman/ARC.

Could you please help me on this.

Thanks in advance.
~Kumar

[Kumar]

Edit:
add service should receive the request from request body and parse.