firstname while lastname is empty, or vice-versa).curl --location '/contacts/quality/invalid-names?limit=50&offset=0&q=contact&sort=-name'{
"contacts": [
{
"uuid": "8f14e45f-ea9d-4a0f-9c7d-8c9a9f7f1b23",
"email": "jane.doe@example.com",
"firstname": "Jane Doe",
"lastname": "",
"companyName": "Acme s.r.o."
},
{
"uuid": "1b645389-2473-446d-9873-0f8f8f9f0a12",
"email": "john.smith@example.com",
"firstname": "",
"lastname": "John Smith",
"companyName": null
}
],
"paging": {
"start": 1,
"count": 2,
"totalCount": 42
}
}