5/
"url" is the URL of the version of your profile someone would go to to see it in a web-browser. (Since this is a my (new) personal website is a solo single-user site, I set it to my home-page.)
You can just set "id" to whatever URL you returned from WebFinger (for the "self" URL).
"icon" is the profile avatar image.
"image" is the banner image on your profile.
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