Re-activate IOC
DELETE {{cb_url}}/threathunter/watchlistmgr/v3/orgs/{{cb_org_key}}/reports/{{cb_report_id}}/iocs/{{cb_ioc_id}}/ignore
IOC ioc_id for report report_id and will match future events for all watchlists. This is not retroactive for events that occured while the IOC was ignored.