curl --request POST \
  --url https://api.example.com/api/v2/external/execution/compose/start \
  --header 'Content-Type: application/json' \
  --data '
{
  "compose_file_code": "<string>",
  "docker_registry_credential_type": "<string>",
  "aws_access_key_id": "<string>",
  "aws_secret_access_key": "<string>",
  "aws_session_token": "<string>",
  "aws_region": "us-east-1",
  "docker_username": "<string>",
  "docker_password": "<string>",
  "timeout": 60,
  "execution_type": "gpu.l40s",
  "file_name": "<string>",
  "enable_s3_mount": false,
  "user_callback_urls": [
    "<string>"
  ],
  "graceful_timeout": 150
}
'

{
  "execution_id": "<string>",
  "status": "<string>",
  "streaming_url": "<string>"
}