In Postman tests, how do I generate a schema from dynamic JSON?

In Postman I want to be able to compare two different environments responses.

First I want to fetch data from the first environment, save the response JSON to an environment variable or a global variable. Then fetch data from the second one, and assert that the JSON from the first fetch has the exact same schema, as the JSON from the second fetch.

Postman doesn't appear to have a 'schema generator' API, so that I could dynamically generate schemas for comparison from the JSON that I receive.

Are there any other ways I could possible resolve this issue with?