リクエスト例curl -H "Authorization: Bearer <API_KEY>" \
https://api.tychy.jp/v1/toukikun/1234567890123
レスポンス例（一部抜粋）
{
"houjin_name": "株式会社近畿商事",
"houjin_capital": 200000000,
"houjin_representatives": [
{ "name": "壹岐正", "position": "代表取締役" }
],
"signed_url": "https://example.com/signed-url",
"is_charged": true
}