curl --request PATCH \
  --url https://realtime-api.voiceflow.com/v1/stable/test-check/{checkID} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "type": "response",
  "payload": {
    "type": "equal",
    "value": "<string>"
  }
}
'

{
  "message": "<string>"
}