doccano/backend/server/static/components/examples/download_speech2text.jsonl

{"id": 1, "text": "data:audio/wav;base64,...", "annotations": [{"id": 1, "label": "Once upon a time...", "user": 1}]}
{"id": 2, "text": "data:audio/mpeg;base64,...", "annotations": [{"id": 2, "label": "...there was a king...", "user": 1}]}