Must I extend any of the serializers in emberjs

I am declaring in my model the following:

import DS from 'ember-data'; export default DS.Model.extend({ name: DS.attr('string'), age: DS.attr('number') });

My server is returning the following json: {"name":"ali","age":33}

When i extend the JSONserializer that expects this form must I override any method like extractArray since I am calling findAll in the route as follows: import Ember from 'ember'; export default Ember.Route.extend({ model: function(){ return'person'); } });