arduino JSON

#include <ArduinoJson.h>

void setup() {
  Serial.begin(115200);
  while (!Serial) {

  }

  StaticJsonBuffer<200> jsonBuffer;
  JsonObject& Val = jsonBuffer.createObject();

  Val["mac"] = "11:22:33:44:55:00";
  Val["uid"] = "123456789";
  Val["off"] = "1";
  Val["statu"] = "no";
  // Add a nested array.
/*
  JsonArray& data = Val.createNestedArray("data");
  data.add(48.756080);
  data.add(2.302038);
*/
  Val.printTo(Serial);

  Serial.println();
}

void loop() {

   delay(10000);
}