{

    "xuid":****************,
    "state":"Online",
    "devices":[
        {
            "type":"XboxOne",
            "titles":[
                {
                    "id":750323071,
                    "name":"Accueil",
                    "placement":"Background",
                    "state":"Active",
                    "lastModified":"2018-02-23T17:09:38.4018406Z"
                },
                {
                    "id":1145574011,
                    "activity":{
                        "richPresence":"Dans un salon privu00e9"
                    },
                    "name":"Titanfallu2122 2",
                    "placement":"Full",
                    "state":"Active",
                    "lastModified":"2018-02-23T17:09:38.4018406Z"
                }
            ]
        }
    ]

}

function (error, response, body) {
    if (!error && response.statusCode === 200) {
        var xbJson = JSON.parse(body);
        console.log(xbJson.devices.titles[1]['name'])
    }
}

TypeError: Cannot read property '1' of undefined
    at Request._callback (/home/atmoner/Bureau/xboxlive/test.js:16:40)
    at Request.self.callback (/home/atmoner/Bureau/xboxlive/node_modules/request/request.js:186:22)
    at emitTwo (events.js:125:13)
    at Request.emit (events.js:213:7)
    at Request.<anonymous> (/home/atmoner/Bureau/xboxlive/node_modules/request/request.js:1163:10)
    at emitOne (events.js:115:13)
    at Request.emit (events.js:210:7)
    at IncomingMessage.<anonymous> (/home/atmoner/Bureau/xboxlive/node_modules/request/request.js:1085:12)
    at Object.onceWrapper (events.js:312:19)
    at emitNone (events.js:110:20)