curl --request POST \
  --url https://api.ttapi.io/producer/v1/extend \
  --header 'Content-Type: application/json' \
  --header 'TT-API-KEY: <api-key>' \
  --data '
{
  "music_id": "<string>",
  "starts": "30.00",
  "sound_prompt": "<string>",
  "lyrics_text": "<string>",
  "instrumental": "false",
  "mv": "FUZZ-2.0",
  "title": "<string>",
  "cover_art_url": "<string>",
  "seed": "<string>",
  "lyrics_strength": "0.5",
  "sound_strength": "0.5",
  "weirdness": "0.5",
  "is_storage": "false",
  "hook_url": "<string>"
}
'

{
  "status": "SUCCESS",
  "message": "success",
  "data": {
    "job_id": "job_id"
  }
}