curl --request POST \
  --url https://api.callers.ai/campaigns/{campaignId}/vocabulary/remove \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "words": [
    "<string>"
  ]
}
'

{
  "success": true,
  "removedCount": 123
}