import json

record = {
    "$type": "app.bsky.feed.post",
    "text": "テスト投稿 from script",
    "createdAt": "2025-05-26T12:00:00Z"
}

with open("record.json", "w", encoding="utf-8") as f:
    json.dump(record, f, ensure_ascii=False, indent=2)