{"pk": "1", "foreign_key_with_label": {"value": "1", "label": "hello"}, "foreign_key_with_blank_label": {"value": "3", "label": ""}, "foreign_key_with_no_label": {"value": "1", "label": "1"}, "foreign_key_compound_pk1": "a", "foreign_key_compound_pk2": "b"}