diff --git a/app/controllers/activitypub/inboxes_controller.rb b/app/controllers/activitypub/inboxes_controller.rb
index 582506902..2ffb47874 100644
--- a/app/controllers/activitypub/inboxes_controller.rb
+++ b/app/controllers/activitypub/inboxes_controller.rb
@@ -76,7 +76,13 @@ class ActivityPub::InboxesController < ActivityPub::BaseController
   end
 
   def process_payload
-    event = ActivityLogEvent.new('inbound', "https://#{Rails.configuration.x.web_domain}#{request.path}", Oj.load(body, mode: :strict))
+    raw_signature = request.headers['Signature']
+    tree          = SignatureParamsParser.new.parse(raw_signature)
+    signature_params = SignatureParamsTransformer.new.apply(tree)
+
+    sender = actor_from_key_id(signature_params['keyId'])
+
+    event = ActivityLogEvent.new('inbound', sender.uri, "https://#{Rails.configuration.x.web_domain}#{request.path}", Oj.load(body, mode: :strict))
 
     @activity_log_publisher.publish(event)
 
diff --git a/app/lib/activity_log_audience_helper.rb b/app/lib/activity_log_audience_helper.rb
index 5ab44351a..d486d6442 100644
--- a/app/lib/activity_log_audience_helper.rb
+++ b/app/lib/activity_log_audience_helper.rb
@@ -6,9 +6,9 @@ class ActivityLogAudienceHelper
     domain = Rails.configuration.x.web_domain
 
     if activity_log_event.type == 'outbound'
-      actor = activity_log_event.data['actor']
+      sender = activity_log_event.sender
 
-      if actor and match = actor.match(Regexp.new("https://#{domain}/users/([^/]*)"))
+      if sender and match = sender.match(Regexp.new("https://#{domain}/users/([^/]*)"))
         [match.captures[0]]
       else
         []
diff --git a/app/lib/activity_log_event.rb b/app/lib/activity_log_event.rb
index 2c1b53e1c..486dc3561 100644
--- a/app/lib/activity_log_event.rb
+++ b/app/lib/activity_log_event.rb
@@ -1,16 +1,17 @@
 # frozen_string_literal: true
 
 class ActivityLogEvent
-  attr_accessor :type, :path, :data, :timestamp
+  attr_accessor :type, :sender, :path, :data, :timestamp
 
   def self.from_json_string(json_string)
     json = Oj.load(json_string, mode: :strict)
-    ActivityLogEvent.new(json['type'], json['path'], json['data'])
+    ActivityLogEvent.new(json['type'], json['sender'], json['path'], json['data'])
   end
 
 
-  def initialize(type, path, data, timestamp = Time.now.utc.iso8601)
+  def initialize(type, sender, path, data, timestamp = Time.now.utc.iso8601)
     @type = type
+    @sender = sender
     @path = path
     @data = data
     @timestamp = timestamp
diff --git a/app/lib/activity_logger.rb b/app/lib/activity_logger.rb
index cbd02a4ea..471d35fb5 100644
--- a/app/lib/activity_logger.rb
+++ b/app/lib/activity_logger.rb
@@ -28,7 +28,7 @@ class ActivityLogger
 
   Thread.new {
     while true
-      event = ActivityLogEvent.new('keep-alive', nil, nil)
+      event = ActivityLogEvent.new('keep-alive', nil, nil, nil)
       @@loggers.each_key do |key|
         ActivityLogger.log(key, event)
       end
diff --git a/app/workers/activitypub/delivery_worker.rb b/app/workers/activitypub/delivery_worker.rb
index a90566ad6..251ef20f7 100644
--- a/app/workers/activitypub/delivery_worker.rb
+++ b/app/workers/activitypub/delivery_worker.rb
@@ -29,10 +29,6 @@ class ActivityPub::DeliveryWorker
   def perform(json, source_account_id, inbox_url, options = {})
     return unless DeliveryFailureTracker.available?(inbox_url)
 
-    event = ActivityLogEvent.new('outbound', inbox_url, Oj.load(json, mode: :strict))
-
-    @activity_log_publisher.publish(event)
-
     @options        = options.with_indifferent_access
     @json           = json
     @source_account = Account.find(source_account_id)
@@ -40,6 +36,11 @@ class ActivityPub::DeliveryWorker
     @host           = Addressable::URI.parse(inbox_url).normalized_site
     @performed      = false
 
+    event = ActivityLogEvent.new('outbound', "https://#{Rails.configuration.x.web_domain}/users/#{@source_account.username}", inbox_url, Oj.load(json, mode: :strict))
+
+    @activity_log_publisher.publish(event)
+
+
     perform_request
   ensure
     if @inbox_url.present?
diff --git a/lib/activity_log_subscriber.rb b/lib/activity_log_subscriber.rb
index 67dd8b87c..28b8a8210 100644
--- a/lib/activity_log_subscriber.rb
+++ b/lib/activity_log_subscriber.rb
@@ -7,8 +7,7 @@ class ActivityLogSubscriber
 
     redis.subscribe('activity_log') do |on|
       on.message do |channel, message|
-        json = Oj.load(message, mode: :strict)
-        event = ActivityLogEvent.new(json['type'], json['path'], json['data'])
+        event = ActivityLogEvent.from_json_string(message)
 
         ActivityLogAudienceHelper.audience(event)
           .each { |username| ActivityLogger.log(username, event) }
diff --git a/spec/fixtures/activity_log_events/inbound-to-users-inbox.json b/spec/fixtures/activity_log_events/inbound-to-users-inbox.json
index 6f868f896..3441ca16c 100644
--- a/spec/fixtures/activity_log_events/inbound-to-users-inbox.json
+++ b/spec/fixtures/activity_log_events/inbound-to-users-inbox.json
@@ -1,5 +1,6 @@
 {
   "timestamp":"2022-12-08T17:12:38Z",
+  "sender": "https://other.org/users/alice",
   "type": "inbound",
   "path": "https://example.com/users/bob/inbox",
   "data": {
diff --git a/spec/fixtures/activity_log_events/inbound-with-duplicate-recipients.json b/spec/fixtures/activity_log_events/inbound-with-duplicate-recipients.json
index f9080cd3b..2822daaab 100644
--- a/spec/fixtures/activity_log_events/inbound-with-duplicate-recipients.json
+++ b/spec/fixtures/activity_log_events/inbound-with-duplicate-recipients.json
@@ -1,5 +1,6 @@
 {
   "timestamp":"2022-12-08T17:12:38Z",
+  "sender": "https://other.org/users/bob/",
   "type": "inbound",
   "path": "https://example.com/inbox",
   "data": {
diff --git a/spec/fixtures/activity_log_events/inbound-with-follower-recipients.json b/spec/fixtures/activity_log_events/inbound-with-follower-recipients.json
index bbdb9cbf9..c4e780149 100644
--- a/spec/fixtures/activity_log_events/inbound-with-follower-recipients.json
+++ b/spec/fixtures/activity_log_events/inbound-with-follower-recipients.json
@@ -1,5 +1,6 @@
 {
   "timestamp":"2022-12-08T17:12:38Z",
+  "sender": "https://other.org/users/bob/",
   "type": "inbound",
   "path": "https://example.com/inbox",
   "data": {
diff --git a/spec/fixtures/activity_log_events/inbound-with-multiple-recipients.json b/spec/fixtures/activity_log_events/inbound-with-multiple-recipients.json
index 6ed42b288..8e911caba 100644
--- a/spec/fixtures/activity_log_events/inbound-with-multiple-recipients.json
+++ b/spec/fixtures/activity_log_events/inbound-with-multiple-recipients.json
@@ -1,5 +1,6 @@
 {
   "timestamp":"2022-12-08T17:12:38Z",
+  "sender": "https://other.org/users/bob/",
   "type": "inbound",
   "path": "https://example.com/inbox",
   "data": {
diff --git a/spec/fixtures/activity_log_events/outbound.json b/spec/fixtures/activity_log_events/outbound.json
index c0940f19d..6e30f1df0 100644
--- a/spec/fixtures/activity_log_events/outbound.json
+++ b/spec/fixtures/activity_log_events/outbound.json
@@ -1,5 +1,6 @@
 {
   "timestamp":"2022-12-08T17:12:38Z",
+  "sender": "https://example.com/users/alice",
   "type": "outbound",
   "path": "https://other.org/users/bob/inbox",
   "data": {
diff --git a/spec/lib/activity_logger_spec.rb b/spec/lib/activity_logger_spec.rb
index fbd733409..16963be23 100644
--- a/spec/lib/activity_logger_spec.rb
+++ b/spec/lib/activity_logger_spec.rb
@@ -1,12 +1,6 @@
 require 'json'
 require 'rails_helper'
 
-def activity_log_event_fixture(name)
-  json_string = File.read(Rails.root.join('spec', 'fixtures', 'activity_log_events', name))
-
-  ActivityLogEvent.from_json_string(json_string)
-end
-
 RSpec.describe ActivityLogger do
 
   after(:each) do