Filter API Request by timestamp

@HOrdonez , make sure you are using milliseconds for the unix timestamp.

I tested with this request successfully:

{
 "filterGroups": [
 {
 "filters": [
 {
 "value": "1635032689886",
 "propertyName": "hs_lastmodifieddate",
 "operator": "GT"
 }
 ]
 }
 ]
}