Here's the scenario that I'm dealing with:
you do a WebFinger lookup (I know. I know. WebFinger is not ActivityPub, but bear with me). You get the URL from the self link of type `application/activity+json`.
Given the URL, you do a request, and the resulting JSON-LD document has a single root node of type `"https://www.w3.org/ns/activitystreams#Person"`.
But the ID does not match the URL from which you made the request. Even from the final URL that was a result of a 301 redirect, if any.
Would this mean that no actors exist, that is identified by the URL?