[
{
"id": 45,
"user_id": "user_12345",
"filename": "song_candidate_1.wav",
"blob_name": "dataset/123e4567-e89b-12d3-a456-426614174000_song_candidate_1.wav",
"file_size": 25165824,
"duration_seconds": 180.0,
"mime_type": "audio/wav",
"created_at": "2026-06-19T12:05:00Z"
}
]