Postman is a popular tool for API development and testing, allowing developers to design, test, and document APIs. It provides a user-friendly graphical interface for sending HTTP requests to APIs.If you haven't installed Postman yet, you can download it for free from the Postman website: https://www.postman.com/
Tip: This example requires a basic understanding of Postman.
Since the signing algorithm uses SHA256withRSA, which is not part of the built-in libraries in the Postman sandbox environment, we need to import an external library.External library link: https://joolfe.github.io/postman-util-lib/#postman-collection