[Returns all Businesses API call not returning full data]

Hello, I am working with the Sage Accounting API.

I am trying to get the full data for businesses under my test Sage account using this Axios request in Node.

https://developer.sage.com/api/accounting/api/user-businesses/#tag/Businesses

const response = await axios.get(
      'https://api.accounting.sage.com/v3.1/businesses',
      {
        headers: { 'Authorization': `Bearer ${accessToken}` }
      }
    )
      .catch(function (error) {
        console.log('error getting businesses', error.response.data);
        res.json({ error: 'error getting businesses' })
      })
    console.log('businesses DATA!', response.data)
    const { $items } = response.data;

Unfortunately, these are the only results I get...

{
    "$total": 1,
    "$page": 1,
    "$next": null,
    "$back": null,
    "$items_per_page": 2147483647,
    "$items": [
        {
            "displayed_as": "test1",
            "id": "dd9b41c0acb5493bab7d01dee779e716",
            "$path": "/businesses/dd9b41c0acb5493bab7d01dee779e716"
        }
    ]
}

The account that holds the business is under a Sage Business Cloud Accounting 30-Day Free Trial subscription.

Also, I noticed that addressing the specific business by ID returns the full data of the business.

{
    "created_at": "2022-04-05T09:37:58Z",
    "updated_at": "2022-04-05T09:37:58Z",
    "displayed_as": "test1",
    "id": "dd9b41c0acb5493bab7d01dee779e716",
    "name": "test1",
    "address_line_1": "some address",
    "address_line_2": null,
    "city": "some town",
    "postal_code": "92618",
    "country": {
        "id": "US",
        "displayed_as": "United States"
    },
    "region": "NE",
    "ni_based": false,
    "telephone": "11111",
    "mobile": "232",
    "website": null,
    "is_demo": false,
    "subscriptions": [
        {
            "created_at": "2022-04-05T09:37:59Z",
            "updated_at": "2022-04-05T09:38:00Z",
            "displayed_as": "Accounting",
            "id": "ACCOUNTING",
            "active": true,
            "status": "trial",
            "accountant_pays": false
        }
    ],
    "$path": "/businesses/dd9b41c0acb5493bab7d01dee779e716",
    "user_roles": [
        "business_owner",
        "system_manager"
    ],
    "user_permissions": [
        {
            "area": "accounting_sales",
            "role": "full_access"
        },
        {
            "area": "accounting_catalogs",
            "role": "full_access"
        },
        {
            "area": "accounting_journals",
            "role": "full_access"
        },
        {
            "area": "accounting_purchases",
            "role": "full_access"
        },
        {
            "area": "accounting_contacts",
            "role": "full_access"
        },
        {
            "area": "accounting_statutory_reporting",
            "role": "full_access"
        },
        {
            "area": "accounting_bank",
            "role": "full_access"
        },
        {
            "area": "accounting_reporting",
            "role": "full_access"
        },
        {
            "area": "accounting_settings",
            "role": "full_access"
        }
    ]
}

Can someone please advise on what's going on here?