how i can acces acf object . i am facing problem due to (/campaign/demo-compaign/) this key. i also tried to acces throguh data["/campaign/demo-compaign/"] but throughing me an error.

"data": {
            "/campaign/demo-compaign/": {
                "pageType": "page",
                "pageData": {
                    "id": 2526,
                    "date": "2022-07-04T06:01:59",
                    "date_gmt": "2022-07-04T06:01:59",
                    "guid": {
                        "rendered": "https://thepoolcollective.acmstest.com/?post_type=campaign&p=2526"
                    },
                    "modified": "2022-07-04T06:01:59",
                    "modified_gmt": "2022-07-04T06:01:59",
                    "slug": "demo-compaign",
                    "status": "publish",
                    "type": "campaign",
                    "link": "https://thepoolcollective.acmstest.com/campaign/demo-compaign/",
                    "title": {
                        "rendered": "demo compaign"
                    },
                    "parent": 0,
                    "template": "",
                    "meta": [],
                    "artists": [],
                    "ACF": {
                        "artist_name": "demo artist",
                        "campaign_name": "demo compaign",
                        "top_text": "",
                        "content_block": false,
                        "bottom_text": "",
                        "bottom_website_link": ""
                    },