curl -n 
  -s "https://example.com/confluence/rest/projectdoc/1/document.json?select=Name&from=SPACEKEY&where=$<Doctype>=[it-service]" | jq .

{
  "size": 63,
  "start-index": 0,
  "max-result": 63,
  "id-list": "6291527,6291530,8520652,8520665,7308961,6295008,6295086,6295038,...,6291777,6291781,6291783",
  "document": [
    {
      "id": 6291527,
...