# File lib/airbrake/rack/user.rb, line 36
      def as_json
        user = {}

        user[:id] = try_to_get(:id)
        user[:name] = full_name
        user[:username] = try_to_get(:username)
        user[:email] = try_to_get(:email)

        user = user.delete_if { |_key, val| val.nil? }
        user.empty? ? user : { user: user }
      end