API to Disable User Atlassian Account Returns Dead Link

I am using this documentation to try to create an API call that will disable a user’s Atlassian account:

I used the following POST request with this URI: https://<COMPANY_SERVER>/users/<ACCOUNT_ID>/manage/lifecycle/disable

But it returns this result:

Oops, you've found a dead link.

Any insight as to why would be greatly appreciated!