; and (IV) the proceeding initiated under subclause (III) results in vacatur of the default judgment or stipulated agreement. (ii) Costs and fees If the proceeding initiated under clause (i)(III) results in a determination that the default judgment or stipulated agreement was sought fraudulently, the provider of the interactive computer service may seek reimbursement of costs and fees relating to the proceeding. (C) Notice of illegal content or illegal activity (i) In general A provider of an interactive computer service shall be deemed to have actual knowledge of illegal content or illegal activity for purposes of subparagraph (A) only if the provider receives notice of such content or activity that substantially complies with the requirements under clause (ii) of this subparagraph. (ii) Elements Notice of illegal content or illegal activity provided to a provider of an interactive computer service as described in clause (i) shall be in writing and include the following: (I) A copy of the order from a trial or appellate Federal or State court, in its entirety, and unsealed if the court has ordered it to be sealed, under which the content or activity was determined to violate Federal criminal or civil law or State defamation law, and to the extent available, any references substantiating the validity of the order, such as the web addresses of public court docket information. (II) Information that is reasonably sufficient to allow the provider to identify and locate the illegal content or illegal activity, including each user or account engaged in the illegal activity and specific locations of content or accounts involved in the illegal content or activity, such as URLs, links, or unique usernames. (III) Information reasonably sufficient to permit the provider to contact the complaining party, which shall include— (aa) if the complaining party is a user of the interactive computer service, information identifying the user account