curl --request POST \
  --url https://api.apimart.ai/v1/music/generations/download \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "suno",
    "task_id": "task_01JGXXXXXXXXXXXX",
    "audio_index": 1,
    "formats": ["mp3", "wav"]
  }'

import requests

response = requests.post(
    "https://api.apimart.ai/v1/music/generations/download",
    headers={"Authorization": "Bearer <token>", "Content-Type": "application/json"},
    json={
        "model": "suno",
        "task_id": "task_01JGXXXXXXXXXXXX",
        "audio_index": 1,
        "formats": ["mp3", "wav"],
    },
)
print(response.json())

const response = await fetch(
  "https://api.apimart.ai/v1/music/generations/download",
  {
    method: "POST",
    headers: {
      Authorization: "Bearer <token>",
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      model: "suno",
      task_id: "task_01JGXXXXXXXXXXXX",
      audio_index: 1,
      formats: ["mp3", "wav"],
    }),
  },
);
console.log(await response.json());

{
  "code": 200,
  "data": [
    {
      "status": "submitted",
      "task_id": "task_01JHXXXXXXXXXXXX"
    }
  ]
}

{
  "error": {
    "message": "`formats` contains unsupported format `flac`. Supported: mp3 / m4a / wav",
    "type": "invalid_request_error",
    "code": "invalid_source_reference"
  }
}

{
  "error": {
    "code": 401,
    "message": "Ошибка аутентификации. Проверьте ключ API.",
    "type": "authentication_error"
  }
}

{
  "error": {
    "code": 402,
    "message": "Недостаточно средств на счёте",
    "type": "payment_required"
  }
}