execute_command

# File actioncable/lib/action_cable/connection/subscriptions.rb, line 17
      def execute_command(data)
        case data["command"]
        when "subscribe"   then add data
        when "unsubscribe" then remove data
        when "message"     then perform_action data
        else
          logger.error "Received unrecognized command in #{data.inspect}"
        end
      rescue Exception => e
        @connection.rescue_with_handler(e)
        logger.error "Could not execute command from (#{data.inspect}) [#{e.class} - #{e.message}]: #{e.backtrace.first(5).join(" | ")}"
      end