How to receive an array in the body of a nodejs route

Good morning everyone. I am facing a great difficulty. I started a week of studies on nodeJS, so I'm pretty noob.

I have a code that returns an object in json format for me and I would like to create a page that Body would receive this. however, I can not create it at all.

I'm using EJS ... I did so to receive my route.

app.get("/", function(req, res){
    res.render("secao/home");
});

app.listen(3000, function(){
    console.log("Servidor rodando");
});

So I would like to get the array here from home.

var http = require("http");

var options = {
    "method": "GET",
    "hostname": [
    "{{accountName}}",
    "{{environment}}",
    "com",
    "br"
    ],
    "path": [
    "api",
    "catalog_system",
    "pvt",
    "category",
    "tree",
    "{{categoryLevels}}",
    ""
    ],
    "headers": {
        "content-type": "application/json",
        "x-vttt-api-appkey-api-appkey": "{{X-Vtt-API-AppKey}}",
        "x-vttt-api-apptoken": "{{X-Vtt-API-AppToken}}"
    }
};

var req = http.request(options, function (res) {
    var chunks = [];
    res.on("data", function (chunk) {
        chunks.push(chunk);
    });
    res.on("end", function () {
        var body = Buffer.concat(chunks);
        console.log(body.toString());
    });
});
req.end();

How to proceed galley. Sorry for my ignorance!