curl --request PATCH \
  --url https://api.bolna.ai/agent/{agent_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "agent_config": {
    "agent_name": "Alfred",
    "agent_welcome_message": "How are you doing Bruce?",
    "webhook_url": null,
    "synthesizer": {
      "provider": "polly",
      "provider_config": {
        "voice": "Matthew",
        "engine": "generative",
        "sampling_rate": "8000",
        "language": "en-US"
      },
      "stream": true,
      "buffer_size": 150,
      "audio_format": "wav"
    },
    "ingest_source_config": {
      "source_type": "api",
      "source_url": "https://example.com/api/data",
      "source_auth_token": "abc123",
      "source_name": "leads_sheet_june.csv"
    }
  },
  "agent_prompts": {
    "task_1": {
      "system_prompt": "What is the Ultimate Question of Life, the Universe, and Everything?"
    }
  }
}'

{
  "message": "success",
  "state": "updated"
}