Array
(
    [1840] => Array
        (
            [parent_category_id] => 1840
            [parent_category] => Array
                (
                    [id] => 1840
                    [slug] => art-design
                    [name] => Art and Design
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Adobe Photoshop
                            [slug] => adobe-photoshop
                            [id] => 1843
                        )

                    [1] => Array
                        (
                            [name] => Art History
                            [slug] => art-history
                            [id] => 1841
                        )

                    [2] => Array
                        (
                            [name] => Art Theory
                            [slug] => art-theory
                            [id] => 1842
                        )

                )

        )

    [1772] => Array
        (
            [parent_category_id] => 1772
            [parent_category] => Array
                (
                    [id] => 1772
                    [slug] => history-social-studies
                    [name] => History and Social Studies
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => American History
                            [slug] => american-history
                            [id] => 1773
                        )

                )

        )

)