How to create a space-level custom content type in Confluence space?

[Asmaa Hadir]

I am creating a keyword directory-like feature in my Confluence cloud app and I would like to create a custom content `keyword` to be rendered as part of the space custom content list view. How can I do this in Forge? I have already written the following code to create the custom content but I am not sure how to proceed...:
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export const createKeyWordCustomContent = async  (type, spaceKey, pageId, keywordValue) => {

    const spaceId = await getSpaceIdByKey(spaceKey);

    var bodyData = `{

      "type": ${type},

      "spaceId": ${spaceId},

      "pageId": ${pageId},

      "title": "Keyword",

      "body": {

        "representation": "storage",

        "value": ${keywordValue}

      }

    }`;

    const response = await api.asUser().requestConfluence(route`/wiki/api/v2/custom-content`, {

      method: 'POST',

      headers: {

        'Accept': 'application/json',

        'Content-Type': 'application/json'

      },

      body: bodyData

    });

    console.log(`Response: ${response.status} ${response.statusText}`);

    console.log(await response.json());

    // postcondition: keyword custom content type created

    // update the keyword value

  }`

Any leads would be great. Thank you :)