curl --request DELETE \
  --url https://api.callers.ai/campaigns/{campaignId}/contacts/bulk \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "contactIds": [
    "<string>"
  ]
}
'

{
  "status": "success",
  "data": {
    "archivedCount": 123
  }
}