curl -X POST https://www.voicelab360.com/api/v1/speech/voice-changer \
  -H "Authorization: Bearer vl360_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "audio_url": "https://your-bucket.com/source.mp3",
    "target_voice_id": "vl360-neural-007",
    "format": "mp3"
  }'

{
  "job_id": "job_vc_001",
  "status": "completed",
  "output_url": "https://cdn.voicelab360.com/vc/job_vc_001.mp3",
  "duration_ms": 6100,
  "credits_used": 77
}