SF_13.3 - https://www.progress.com/documentation/sitefinity-cms/headless-development/filter-and-sort-operations

FilterByInequalitySR.json

{
    "@odata.context": "http://localhost:4242/api/default/$metadata#newsitems(Id,LastModified,PublicationDate,Title,Description,DateCreated,IncludeInSitemap,UrlName,NumberField,AllowComments,Summary,Content,Author,SourceName,SourceSite)",
    "value": [
        {
            "Id": "fa7e8140-5a9b-478a-9312-848b206a7337",
            "LastModified": "2021-04-14T11:24:44Z",
            "PublicationDate": "2021-03-12T13:27:08Z",
            "Title": "Lorem ipsum",
            "Description": "",
            "DateCreated": "2021-03-12T13:27:08Z",
            "IncludeInSitemap": true,
            "UrlName": "lorem-ipsum",
            "NumberField": 3,
            "AllowComments": true,
            "Summary": "",
            "Content": "",
            "Author": "",
            "SourceName": null,
            "SourceSite": null
        }
    ]
}