Update Discord invite
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Details for changing a Discord invite after placing member marketplace order
This only succeeds if you haven't started the pull yet. Don't include the "discord.gg" portion of the invite link. Only the end invite code. Example: "dyno". Also remember the reference is NOT the same as Order ID, see the response of Buy Members for the "reference" field