AppealSubmit(AppealSubmit)

{
    "reason": "提交的学生证照片清晰度不够,但实际证件信息是正确的.特此补充高清照片作为证明.",
    "additional_documents": [
        {
            "document_type": "student_id",
            "file_url": "https://cdn.example.com/documents/student_card.jpg",
            "file_name": "student_card.jpg",
            "mime_type": "image/jpeg"
        }
    ]
}