'dc' => (object)['@id' => 'http://purl.org/dc/terms/', '@type' => '@id'],
'toot' => (object)['@id' => 'http://joinmastodon.org/ns#', '@type' => '@id']];
+ // Workaround for Nextcloud Social
+ // See issue https://github.com/nextcloud/social/issues/330
+ $json['@context'][] = 'https://w3id.org/security/v1';
+
// Trying to avoid memory problems with large content fields
if (!empty($json['object']['source']['content'])) {
$content = $json['object']['source']['content'];