One of the advantages of using Postman is that it is possible to generate a basic "client code" in multiple languages.
Just by clicking in the "</>" button, you will get access to the "code snippets" that postman can generate, based on the request you are trying to test:
For further information on how to use this feature, please check here: https://learning.postman.com/docs/sending-requests/generate-code-snippets/