How to print JSON on terminal?

Question

I have json with the library below (C++ Rest SDK):

https://microsoft.github.io/cpprestsdk/classweb_1_1json_1_1value.html

And I can print a json as below:

web::json::value restJson;

out << restJson.serialize() << "\n\n";

However this prints all json in one line. It does not look good enough. Is there way for me to print this indented way?

EDIT: If some one answer with a simple pretty print function that would be great.