How to Dynamically Parse Nested Configurations Without Explicit Recursion in Python using Match?

I’m exploring the new match statement introduced in Python 3.10. I want to learn how to parse JSON strings or YAML.

Here’s the specific problem:

The configuration structure can vary significantly between files (e.g., different nesting levels or keys).
I want to use match to handle cases dynamically without explicitly writing recursive functions.
Each key-value pair or structure in the configuration might need a custom action (e.g., transform, validation, etc.).

For example, given this JSON structure:

{
  "server": {
    "host": "localhost",
    "ports": [8080, 8081],
    "auth": {"type": "basic", "user": "admin"}
  },
  "logging": {
    "level": "debug",
    "file": "/var/log/app.log"
  }
}

How could I write a Python function using match to:

Extract and process the server and logging blocks separately.
Handle unknown keys gracefully (e.g., log a warning or ignore them).
Support varying levels of nesting while keeping the code maintainable.