Django serializer for one object

I'm trying to figure out a way to serialize some Django model object to JSON format, something like:

j = Job.objects.get(pk=1)
##############################################
#a way to get the JSON for that j variable???
##############################################

I don't want:

from django.core import serializers
serializers.serialize('json', Job.objects.get(pk=1),ensure_ascii=False)

Because it returns JSON array, not a single object representation.

Any ideas?

One way I'm thinking of: is to find a way to get a hash(attribute,value) of the object and then use simplejson to get the JSON representation of it, however I don't know how to get that hash.