curl --request PUT \
  --url https://api.comm.com/api/v1/voice/agents/{agent}/prompts/{prompt} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "welcome_message": "<string>",
  "prompt": "<string>",
  "voice_id": "<string>",
  "voice_name": "<string>"
}
'

{
  "data": {
    "id": "<string>",
    "agent_id": "<string>",
    "welcome_message": "<string>",
    "prompt": "<string>",
    "voice_id": "<string>",
    "voice_name": "<string>",
    "created_at": "2023-11-07T05:31:56Z"
  }
}