curl --request POST \
  --url https://geoff.ai/api/v1/t2a/async \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "text": "Long-form text content to convert to speech...",
    "voice_id": "default",
    "format": "mp3"
  }'

{
  "data": {
    "task_id": "task_abc123",
    "status": "processing"
  },
  "trace_id": "04ede0ab069fb1ba8be5156a24b1e081"
}