curl --request PATCH \
  --url https://supertoneapi.com/v1/custom-voices/{voice_id} \
  --header 'Content-Type: application/json' \
  --header 'x-sup-api-key: <api-key>' \
  --data '
{
  "name": "My Updated Voice",
  "description": "An updated warm and friendly voice for customer service"
}
'

{
  "voice_id": "voice_123456789",
  "name": "My Updated Voice",
  "description": "An updated warm and friendly voice for customer service"
}