{'code': 'SIGN_ERROR', 'detail': {'detail': {'issue': 'sign not match'}, 'field': 'signature', 'location': 'authorization', 'sign_information': {'method': 'POST', 'sign_message_length': 310, 'truncated_sign_message': 'POST\n/v3/pay/transactions/jsapi\n1687761072\n123adsddf\n{"mchid"\n', 'url': '/v3/pay/transactions/jsapi'}}

data = {

    "mchid": "",

    "out_trade_no": "",

    "appid": "",

    "description": "123",

    "notify_url": "",

    "amount": {

        "total": 7,

        "currency": "CNY"

    },

    "payer": {

        "openid": "oGI-b6FZwx25YFt-aMx3myunYC3s"

    }

}

message = f'{http_method}\n{canonical_url}\n{timestamp}\n{nonce_str}\n{body}\n'

是body的格式问题吗？应该是什么格式啊