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In n the system, in order to get data from mangOH you need to enter the following:

• Server: eu.airvantage.net port 1883
• Topic : IMEI/messages/json
• QoS: 0 (Default)
• Name: {Any desired text string} This is a text identifier for the MQTT Input Node

Match your input values for the following screen

• User name : 359377060016085
• password: SWI

Some users have reported problems consuming the payload once it is in Node-RED.  The javascript below should help to avoid a couple of pitfalls.

var msgStr = '{"payload": "{\\\"arduino.water\\\": true}"}';

var msgObj = JSON.parse(msgStr);

var payloadStr = msgObj["payload"];

var payloadObj = JSON.parse(payloadStr);

alert(payloadObj["arduino.water"]);

For direct response to questions, please register on the forum at  mangoh.io ( http://forum.mangoh.io/)