Analytics API paging pageSize not working

Trying to pull queue SLA data using the Genesys Cloud Analytics API. I’m setting pageSize=1000 in the request, but the response pageCount is still 10 and I only get 50 records back. Here’s the cURL snippet:

curl -X GET "https://api.mypurecloud.com/api/v2/analytics/queues/summary" \
 -H "Authorization: Bearer $TOKEN" \
 -H "Content-Type: application/json" \
 --data '{ "pageSize": 1000, "dateFrom": "2023-10-01T00:00:00.000Z" }'

Why is it ignoring the size parameter?