Not able to filter hosts based on operating_system version using system_profile filter from API

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Description of Problem

Trying to retrieve all hosts in the inventory with a filter on the operating_system value located in system_profile. For some reason, the filter does not work when specifying operating_system with version.

I'm using the following filter:

{"system_profile": {"operating_system": {"major": "8"}}}

It gives the following error:

{
  "detail": "Incomplete path provided: {'major': '8'} ",
  "status": 400,
  "title": "Validation Error",
  "type": "about:blank"
}

How reproducible

Always

Steps to Reproduce

1. Go to https://console.redhat.com/docs/api/inventory/v1#operations-hosts-api\.host\.get_host_list
2. In the filter object, use following:

{"system_profile": {"operating_system": {"major": "8"}}}
or
{"system_profile": {"operating_system": {"major": 8, "minor": 8, "name": "RHEL"}}}

Actual Behavior

It is giving error "Incomplete path provided".

Expected Behavior

It should filter the hosts depending on the operating system version.