The task was resolved here: decoding response: We need to implement the same: console application that takes xml file, cert file and password as argument, sends to webservice and writes plaintext response to a file.
I want to build an NFT server and service for other client project to use to upload and store NFTs. We are not an end-user to call other APIs. We are building an NFT API service for other developers. We need someone who knows NFT cryptography and can build an NFT Service from scratch. The process would be to create the CONCEPTUAL and LOGICAL Design models first to demonstrate proof of concept and that you understand the technology / cryptography and how it works. This should be done in the first week. Once that is approved, we will continue with development in the second week.