[02-Nov-2021 10:05:28 UTC] stdClass Object
(
    [merge_fields] => Array
        (
            [0] => stdClass Object
                (
                    [merge_id] => 1
                    [tag] => FNAME
                    [name] => First Name
                    [type] => text
                    [required] => 1
                    [default_value] =>
                    [public] => 1
                    [display_order] => 2
                    [options] => stdClass Object
                        (
                            [size] => 25
                        )

                    [help_text] =>
                    [list_id] => c540e7f74e
                    [_links] => Array
                        (
                            [0] => stdClass Object
                                (
                                    [rel] => self
                                    [href] => https://us4.api.mailchimp.com/3.0/lists/c540e7f74e/merge-fields/1
                                    [method] => GET
                                    [targetSchema] => https://us4.api.mailchimp.com/schema/3.0/Definitions/Lists/MergeFields/Response.json
                                )

                            [1] => stdClass Object
                                (
                                    [rel] => parent
                                    [href] => https://us4.api.mailchimp.com/3.0/lists/c540e7f74e/merge-fields
                                    [method] => GET
                                    [targetSchema] => https://us4.api.mailchimp.com/schema/3.0/Definitions/Lists/MergeFields/CollectionResponse.json
                                    [schema] => https://us4.api.mailchimp.com/schema/3.0/Paths/Lists/MergeFields/Collection.json
                                )

                            [2] => stdClass Object
                                (
                                    [rel] => update
                                    [href] => https://us4.api.mailchimp.com/3.0/lists/c540e7f74e/merge-fields/1
                                    [method] => PATCH
                                    [targetSchema] => https://us4.api.mailchimp.com/schema/3.0/Definitions/Lists/MergeFields/Response.json
                                    [schema] => https://us4.api.mailchimp.com/schema/3.0/Definitions/Lists/MergeFields/PATCH.json
                                )

                            [3] => stdClass Object
                                (
                                    [rel] => delete
                                    [href] => https://us4.api.mailchimp.com/3.0/lists/c540e7f74e/merge-fields/1
                                    [method] => DELETE
                                )

                        )

                )

        )

    [list_id] => c540e7f74e
    [total_items] => 1
    [_links] => Array
        (
            [0] => stdClass Object
                (
                    [rel] => self
                    [href] => https://us4.api.mailchimp.com/3.0/lists/c540e7f74e/merge-fields
                    [method] => GET
                    [targetSchema] => https://us4.api.mailchimp.com/schema/3.0/Definitions/Lists/MergeFields/CollectionResponse.json
                    [schema] => https://us4.api.mailchimp.com/schema/3.0/Paths/Lists/MergeFields/Collection.json
                )

            [1] => stdClass Object
                (
                    [rel] => create
                    [href] => https://us4.api.mailchimp.com/3.0/lists/c540e7f74e/merge-fields
                    [method] => POST
                    [targetSchema] => https://us4.api.mailchimp.com/schema/3.0/Definitions/Lists/MergeFields/Response.json
                    [schema] => https://us4.api.mailchimp.com/schema/3.0/Definitions/Lists/MergeFields/POST.json
                )

            [2] => stdClass Object
                (
                    [rel] => parent
                    [href] => https://us4.api.mailchimp.com/3.0/lists/c540e7f74e
                    [method] => GET
                    [targetSchema] => https://us4.api.mailchimp.com/schema/3.0/Definitions/Lists/Response.json
                )

        )

)