diff --git a/app/controllers/activities_controller.rb b/app/controllers/activities_controller.rb
index 8b044b377..b479aef2a 100644
--- a/app/controllers/activities_controller.rb
+++ b/app/controllers/activities_controller.rb
@@ -145,8 +145,7 @@ def show
 
   protected
     def set_activity
-      response = Activity.find_by_id(params[:id])
-      @activity = response.results.first
+      @activity = Activity.find_by_request_uuid!(params[:id])
       fail ActiveRecord::RecordNotFound if @activity.blank?
     end
 end
diff --git a/app/serializers/activity_serializer.rb b/app/serializers/activity_serializer.rb
index 99c14cc1b..15bd86869 100644
--- a/app/serializers/activity_serializer.rb
+++ b/app/serializers/activity_serializer.rb
@@ -14,55 +14,49 @@ class ActivitySerializer
              :version
 
   attribute :changes do |object, params|
-    changes = object._source.changes
-    pub = changes.publisher
-    pub_obj = changes.publisher_obj
+    # Determine the source and action based on the object's type
+    if object.is_a? Activity
+      changes = object.audited_changes
+      action = object.action
+    else
+      changes = object._source.changes
+      action = object._source.action
+    end
 
-    ret = changes
+    # Extract publisher and publisher_obj from changes
+    pub = changes&.dig("publisher")
+    pub_obj = changes&.dig("publisher_obj")
 
-    if object._source.action == "update"
-      if pub || pub_obj
-        if params[:publisher] == "true"
-          if !pub_obj
-            changes.publisher =
-              [
-                { "name": pub[0] },
-                { "name": pub[1] },
-              ]
-          else
-            changes.publisher = changes.publisher_obj
-          end
+    # Customize publisher information based on params[:publisher]
+    if pub || pub_obj
+      if params&.dig(:publisher) == "true"
+        if pub_obj
+          changes["publisher"] = pub_obj
         else
-          if !pub
-            changes.publisher = [ pub_obj[0].name, pub_obj[1].name ]
-          end
+          changes["publisher"] =
+            action == "update" ? [
+              pub[0] ? { "name": pub[0] } : nil,
+              pub[1] ? { "name": pub[1] } : nil
+            ] : { "name": pub }
         end
-
-        ret = changes
-      end
-    elsif object._source.action == "create"
-      if pub || pub_obj
-        if params[:publisher] == "true"
-          if !pub_obj
-            changes.publisher = { "name": pub }
-          else
-            changes.publisher = changes.publisher_obj
-          end
+      else
+        if pub_obj
+          changes["publisher"] =
+            action == "update" ? [
+              pub_obj[0] ? pub_obj[0]["name"] : nil,
+              pub_obj[1] ? pub_obj[1]["name"] : nil
+            ] : pub_obj["name"]
         else
-          if !pub
-            changes.publisher = pub_obj.name
-          end
+          changes["publisher"] = pub
         end
-
-        ret = changes
       end
     end
 
-    if pub_obj
-      changes.delete("publisher_obj")
-    end
+    # Remove the not needed "publisher_obj" key
+    changes.delete("publisher_obj")
 
-    ret
+    # Return the modified changes
+    changes
   end
 
   attribute "prov:wasDerivedFrom", &:was_derived_from
diff --git a/config/routes.rb b/config/routes.rb
index f1b42826f..537af3ac8 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -178,7 +178,7 @@
 
   resources :heartbeat, only: %i[index]
 
-  resources :activities, only: %i[index show]
+  resources :activities, only: %i[index show], constraints: { id: /.+/ }
 
   resources :clients, constraints: { id: /.+/ } do
     resources :prefixes, constraints: { id: /.+/ }
diff --git a/lib/tasks/activity.rake b/lib/tasks/activity.rake
index d0891d871..7a8cbcd08 100644
--- a/lib/tasks/activity.rake
+++ b/lib/tasks/activity.rake
@@ -36,6 +36,11 @@ namespace :activity do
     puts Activity.monitor_reindex
   end
 
+  desc "Create alias for activities"
+  task create_alias: :environment do
+    puts Activity.create_alias(index: ENV["INDEX"], alias: ENV["ALIAS"])
+  end
+
   desc "Import all activities"
   task import: :environment do
     from_id = (ENV["FROM_ID"] || 1).to_i
diff --git a/lib/tasks/elasticsearch.rake b/lib/tasks/elasticsearch.rake
index 0e23c31db..e01462cc2 100644
--- a/lib/tasks/elasticsearch.rake
+++ b/lib/tasks/elasticsearch.rake
@@ -32,6 +32,7 @@ namespace :elasticsearch do
     Rake::Task["event:create_alias"].invoke
 
     Rake::Task["activity:create_index"].invoke
+    Rake::Task["activity:create_alias"].invoke
 
     Rake::Task["contact:create_index"].invoke
     Rake::Task["contact:create_alias"].invoke