示例: aws预上传
{
    "form_attributes": {
        "action": "https://tw591-im-photo.s3.ap-northeast-1.amazonaws.com",
        "method": "POST",
        "enctype": "multipart/form-data"
    },
    "form_inputs": {
        "key": "test.jpg",
        "Content-Type": "video/mp4",
        "X-Amz-Credential": "33333/20230128/ap-northeast-1/s3/aws4_request",
        "X-Amz-Algorithm": "AWS4-HMAC-SHA256",
        "X-Amz-Date": "20230128T044411Z",
        "Policy": "eyJleH322329hcC1ub3J0aGVhc3QtMVwvczNcL2F3czRfcmVxdWVzdCJ9LHsiWC1BbXotQWxnb3JpdGhtIjoiQVdTNC1ITUFDLVNIQTI1NiJ9XX0=",
        "X-Amz-Signature": "330d25ebe4a50113476b61f502ae159f9ff46c9722c144a557d14bac8165c7ce"
    }
}