Approval.

backend/en/data_history.json

@@ -54,6 +54,7 @@
         "object": "Object",
         "reception_publication": "Reception",
         "visibility (sm)": "Visibility (social media)",
-        "link_persinst": "Linked an actor"
+        "link_persinst": "Linked an actor",
+        "unlink_persinst": "Remove link to an actor"
     }
 }