You can solve this by updating your payload to the body below. I have additional context and instructions in a similar post.
{
"properties": [
"phone",
"mobilephone",
"jobtitle",
"hubspot_owner_id"
],
"filterGroups": [
{
"filters": [
{
"propertyName": "createdate",
"operator": "GTE",
"value": "2024-03-18T08:37:20Z"
}
]
}
]
}