Here's a simple audit logging solution using an AuditLog ActiveRecord model with a polymorphic association, a Sidekiq worker, and an audit_log controller method. I wrote about the approach in Audit Logging in Rails.
class ApplicationController < ActionController::Base
def audit_log(auditable, account, event)
AuditLogWorker.perform_async(auditable.to_global_id, account.id, current_user.id, event)