This endpoint is used to confirm that the user received a First To Claim offer, but chose not to claim the lead.
This endpoint will return
204 No Content if ignoring the lead claim was successful and a
404 Not Found if there is no person found that can be unclaimed. Currently ignoring a claim doesn't do anything other than log when the user ignored the First To Claim offer. (This helps us measure reliability of the First To Claim process.)
Ignored unclaimed leads will still be returned along with any other unclaimed leads.