Node.js and protocol buffers - I have a <SlowBuffer >? What is that?

I am struggling understanding protocol buffers in node.js...

I receive a message from a post. I

var Schema = require('protobuf').Schema;
var schema = new Schema(fs.readFileSync('/home/ubuntu/workspace/MySchmae.desc'));

var Feed  = schema['MySchema'];
var serialized = Feed.serialize(req.body);

The value of serialized is a . I am assuming that this my object I want to parse. There is a field called country. I tried serialized.country but I get undefined.

As a side..are the any good tutorials other than the non descript one pager form proto node?