How to query graphql issuing post requests with json parameters using google apps script?

I’ve been trying to scrape the first column from the table of this webpage using google apps script. When I observe network activity in dev tools, I could notice that I have to send post http requests with json parameters to get required response from that site.

I’ve already found success using a python script that I wrote earlier. I tried to mimic the logic that I used in python within the following script but no luck. I always end up getting 403 status code.

function parseOpensea() {
  var data = {"id":"EventHistoryQuery","query":"query EventHistoryQuery(n  $archetype: ArchetypeInputTypen  $bundle: BundleSlugn  $collections: [CollectionSlug!]n  $categories: [CollectionSlug!]n  $chains: [ChainScalar!]n  $eventTypes: [EventType!]n  $cursor: Stringn  $count: Int = 16n  $showAll: Boolean = falsen  $identity: IdentityInputTypen) {n  ...EventHistory_data_L1XK6n}nnfragment AccountLink_data on AccountType {n  addressn  confign  isCompromisedn  user {n    publicUsernamen    idn  }n  ...ProfileImage_datan  ...wallet_accountKeyn  ...accounts_urln}nnfragment AssetCell_asset on AssetType {n  collection {n    namen    idn  }n  namen  ...AssetMedia_assetn  ...asset_urln}nnfragment AssetCell_assetBundle on AssetBundleType {n  assetQuantities(first: 2) {n    edges {n      node {n        asset {n          collection {n            namen            idn          }n          namen          ...AssetMedia_assetn          ...asset_urln          idn        }n        relayIdn        idn      }n    }n  }n  namen  slugn}nnfragment AssetMedia_asset on AssetType {n  animationUrln  backgroundColorn  collection {n    displayData {n      cardDisplayStylen    }n    idn  }n  isDelistedn  imageUrln  displayImageUrln}nnfragment AssetQuantity_data on AssetQuantityType {n  asset {n    ...Price_datan    idn  }n  quantityn}nnfragment CollectionLink_assetContract on AssetContractType {n  addressn  blockExplorerLinkn}nnfragment CollectionLink_collection on CollectionType {n  namen  ...collection_urln  ...verification_datan}nnfragment EventHistory_data_L1XK6 on Query {n  assetEvents(after: $cursor, bundle: $bundle, archetype: $archetype, first: $count, categories: $categories, collections: $collections, chains: $chains, eventTypes: $eventTypes, identity: $identity, includeHidden: true) {n    edges {n      node {n        assetBundle @include(if: $showAll) {n          relayIdn          ...AssetCell_assetBundlen          ...bundle_urln          idn        }n        assetQuantity {n          asset @include(if: $showAll) {n            relayIdn            assetContract {n              ...CollectionLink_assetContractn              idn            }n            ...AssetCell_assetn            ...asset_urln            collection {n              ...CollectionLink_collectionn              idn            }n            idn          }n          ...quantity_datan          idn        }n        relayIdn        eventTimestampn        eventTypen        offerExpiredn        customEventNamen        ...utilsAssetEventLabeln        devFee {n          asset {n            assetContract {n              chainn              idn            }n            idn          }n          quantityn          ...AssetQuantity_datan          idn        }n        devFeePaymentEvent {n          ...EventTimestamp_datan          idn        }n        fromAccount {n          addressn          ...AccountLink_datan          idn        }n        price {n          quantityn          quantityInEthn          ...AssetQuantity_datan          idn        }n        endingPrice {n          quantityn          ...AssetQuantity_datan          idn        }n        seller {n          ...AccountLink_datan          idn        }n        toAccount {n          ...AccountLink_datan          idn        }n        winnerAccount {n          ...AccountLink_datan          idn        }n        ...EventTimestamp_datan        idn        __typenamen      }n      cursorn    }n    pageInfo {n      endCursorn      hasNextPagen    }n  }n}nnfragment EventTimestamp_data on AssetEventType {n  eventTimestampn  transaction {n    blockExplorerLinkn    idn  }n}nnfragment Price_data on AssetType {n  decimalsn  imageUrln  symboln  usdSpotPricen  assetContract {n    blockExplorerLinkn    chainn    idn  }n}nnfragment ProfileImage_data on AccountType {n  imageUrln  addressn}nnfragment accounts_url on AccountType {n  addressn  user {n    publicUsernamen    idn  }n}nnfragment asset_url on AssetType {n  assetContract {n    addressn    chainn    idn  }n  tokenIdn}nnfragment bundle_url on AssetBundleType {n  slugn}nnfragment collection_url on CollectionType {n  slugn}nnfragment quantity_data on AssetQuantityType {n  asset {n    decimalsn    idn  }n  quantityn}nnfragment utilsAssetEventLabel on AssetEventType {n  isMintn  eventTypen}nnfragment verification_data on CollectionType {n  isMintablen  isSafelistedn  isVerifiedn}nnfragment wallet_accountKey on AccountType {n  addressn}n","variables":{"archetype":null,"bundle":null,"collections":["boredapeyachtclub"],"categories":null,"chains":null,"eventTypes":["AUCTION_SUCCESSFUL","OFFER_ENTERED"],"cursor":null,"count":16,"showAll":true,"identity":null}};

  var options = {
    "method" : "POST",
    'payload': JSON.stringify({'query': data}),
    'muteHttpExceptions': true,
    "headers" : {
        "accept": "*/*",
        "content-type": "application/json",
        "User-Agent": "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36",
        "x-signed-query": "53ff23d0333e3997651740e18c7ea66da6f29fcc5e4d5aacd302574209e44e56",
     }
    };

  var webURL = "https://api.opensea.io/graphql/";

  var response = UrlFetchApp.fetch(webURL,options);
  // var item = JSON.parse(response.getContentText());
  console.log(response.getResponseCode());
  // var pid = item.data.assetEvents;
  // console.log(pid);

}

How to fetch the first coulmn from the table of this website issuing post requests with json parameters?