{"$schema":"https://json-schema.org/draft/2020-12/schema","$id":"https://upwolf.com/dev/schema/OfferChanges.json","title":"Change list","type":"object","properties":{"items":{"type":"array","items":{"type":"object","properties":{"external_id":{"type":"string","description":"Which offer changed."},"version":{"type":"string","description":"Its current content fingerprint."},"status":{"type":"string","description":"Saves a detail call when all we need is the status.","enum":["published","pending","closed"]},"updated_at":{"type":"string","description":"When it changed."}},"required":["external_id","version"]}},"next_page":{"type":["string","integer","null"],"description":"Handed back verbatim as `page`. `null` ends the walk."}},"required":["next_page"]}