Endpoint to retrieve all entities in Pipedrive?

I’m looking for an endpoint that would return a list of all entities Activities, Deals, Users, etc. without having a hardcoded list of endpoints for querying. Additionally, I’d like to then take those entities and retrieve their fields without having to hardcode the list of fields. I’ve only seen the following: ‘activityFields’, ‘dealFields’, ‘noteFields’, ‘organizationFields’, ‘personFields’, ‘productFields’.