request.js

require('AWSRequest')

var creds = {
    key: '-',
    secret: '-'
};
var target = 'GameLift.ListAliases';
var requestBody = { __type: 'ListAliasesInput' };
 
 
var Request = new AWSRequest(
    'gamelift.sa-east-1.amazonaws.com',
    '/',
    '',
    [
        {
            name : 'x-amz-target',
            value : target
        },
        {
            name: 'content-type',
            value: 'application/x-amz-json-1.1'
        }
    ],
    requestBody,
    "sa-east-1",
    "gamelift",
    creds
);

Request.makeRequest(function(respnose, error) {
    Spark.setScriptData("result", error);
});