index.js

var putData = JSON.stringify({
  bobby: "test",
  date: new Date()
});

var buffData = new Buffer(putData).toString("base64");

kinesis.request('PutRecord', 
                {
                  StreamName: 'IntelJS',
                  PartitionKey: '12456',
                  Data: buffData
                },
                function(err,data) {
                  if (err) throw err;
                  console.dir(data);
                });