diff --git a/lib/worker/api/settings.rb b/lib/worker/api/settings.rb
index 074de89..bc7ed2c 100644
--- a/lib/worker/api/settings.rb
+++ b/lib/worker/api/settings.rb
@@ -6,16 +6,18 @@ module W3DHubLauncher
       class Settings
         SCHEMA = 0
 
-        attr_reader :schema, :preferences
+        attr_accessor :last_selected_app, :last_selected_app_channel, :last_selected_server_app, :preferences, :applications, :account
 
         def initialize(data)
           @schema = data["schema"] || SCHEMA
 
           @last_selected_app = data["last_selected_app"] || "ren"
           @last_selected_app_channel = data["last_selected_app_channel"] || "release"
+          @last_selected_server_app = data["last_selected_server_app"] || ""
 
           @preferences = Preferences.new(data["preferences"])
           @applications = (data["applications"] || []).map { |app_data| Application.new(app_data) }
+          @account = Account.new(data["account"])
         end
 
         def to_json(context = nil)
@@ -23,8 +25,10 @@ module W3DHubLauncher
             schema: @schema,
             last_selected_app: @last_selected_app,
             last_selected_app_channel: @last_selected_app_channel,
+            last_selected_server_app: @last_selected_server_app,
             preferences: @preferences,
-            applications: @applications
+            applications: @applications,
+            account: @account
           }.to_json(context)
         end
 
@@ -32,7 +36,12 @@ module W3DHubLauncher
         class Preferences
           SCHEMA = 0
 
+          attr_accessor :language, :nickname, :launcher_package_cache_directory, :application_installation_directory,
+                        :wine_prefix_path, :wine_command, :winetricks_command
+
           def initialize(data)
+            data ||= {}
+
             @schema = data["schema"] || SCHEMA
 
             @language = data["language"] || "en"
@@ -46,7 +55,14 @@ module W3DHubLauncher
 
           def to_json(context = nil)
             {
-
+              schema: @schema,
+              language: @language,
+              nickname: @nickname,
+              launcher_package_cache_directory: @launcher_package_cache_directory,
+              application_installation_directory: @application_installation_directory,
+              wine_prefix_path: @wine_prefix_path,
+              wine_command: @wine_command,
+              winetricks_command: @winetricks_command
             }.to_json(context)
           end
         end
@@ -55,12 +71,29 @@ module W3DHubLauncher
         class Application
           SCHEMA = 0
 
+          attr_reader :id, :channel
+          attr_accessor :version, :installation_path, :wine_prefix_path, :launch_command
+
+          def self.create(id:, channel:, version:, installation_path:, wine_prefix_path:, launch_command:)
+            hash = {
+              "schema" => SCHEMA,
+              "id" => id,
+              "channel" => channel,
+              "version" => Gem::Version.new(version),
+              "installation_path" => installation_path,
+              "wine_prefix_path" => wine_prefix_path,
+              "launch_command" => launch_command,
+            }
+
+            self.new(hash)
+          end
+
           def initialize(data)
             @schema = data["schema"] || SCHEMA
 
             @id = data["id"]
             @channel = data["channel"]
-            @version = data["version"]
+            @version = Gem::Version.new(data["version"])
             @installation_path = data["installation_path"]
             @wine_prefix_path = data["wine_prefix_path"]
             @launch_command = data["launch_command"]
@@ -68,7 +101,67 @@ module W3DHubLauncher
 
           def to_json(context = nil)
             {
+              schema: @schema,
+              id: @id,
+              channel: @channel,
+              version: @version.to_s,
+              installation_path: @installation_path,
+              wine_prefix_path: @wine_prefix_path,
+              launch_command: @launch_command
+            }.to_json(context)
+          end
+        end
 
+        # User account data
+        class Account
+          SCHEMA = 0
+
+          attr_accessor :user_id, :username, :displayname, :avatar_uri, :access_token, :refresh_token,
+                        :access_token_expiration_time
+
+          def self.create(user_id:, username:, displayname:, avatar_uri:, access_token:, refresh_token:, access_token_expiration_time:)
+            hash = {
+              "schema" => SCHEMA,
+              "user_id" => user_id,
+              "username" => username,
+              "displayname" => displayname,
+              "avatar_uri" => avatar_uri,
+              "access_token" => access_token,
+              "refresh_token" => refresh_token,
+              "access_token_expiration_time" => access_token_expiration_time
+            }
+
+            self.new(hash)
+          end
+
+          def initialize(data)
+            data ||= {}
+
+            @schema = data["schema"] || SCHEMA
+
+            @user_id = data["user_id"] || -1
+            @username = data["username"] || ""
+            @displayname = data["displayname"] || ""
+            @avatar_uri = data["avatar_uri"] || ""
+            @access_token = data["access_token"] || ""
+            @refresh_token = data["refresh_token"] || ""
+            @access_token_expiration_time = Time.at(data["access_token_expiration_time"] || 0)
+          end
+
+          def signed_in?
+            @user_id.positive?
+          end
+
+          def to_json(context = nil)
+            {
+              schema: @schema,
+              user_id: @user_id,
+              username: @username,
+              displayname: @displayname,
+              avatar_uri: @avatar_uri,
+              access_token: @access_token,
+              refresh_token: @refresh_token,
+              access_token_expiration_time: @access_token_expiration_time.to_i
             }.to_json(context)
           end
         end