Can't get proper pagination from API Explorer

[amm]

I am making a request to /api/v2/analytics/conversations/details/query with the following body, but for some reason I am getting back a full 78 results and no pagination metadata. Is there a bug with returning paginated responses or could I be doing something wrong?

{
  "interval": "2023-11-15T15:29:42.000Z/2023-11-25T15:30:42.000Z",
  "order": "asc",
  "orderBy": "conversationStart",
  "paging": {
    "pageSize": 25,
    "pageNumber": 1
  },
  "conversationFilters": [
    {
      "type": "and",
      "predicates": [
        {
          "type": "dimension",
          "dimension": "conversationEnd",
          "operator": "exists",
          "value": null
        }
      ]
    }
  ]
}