{"ok":false,"status":"appeal_requires_signature","case_uuid":"4825b1e0-ed8e-431d-9b8a-59a0fb2b2a76","policy_build":"20260511-r7","note":"提交申诉需附带请求签名 sig。计算方式：将 case_uuid、policy_build 按顺序用竖线连接（case_uuid|policy_build），取该字符串 SHA-256 十六进制摘要的前 10 位小写字符。提交方式：POST https://waf.alipay.com/api/v1/appeal/4825b1e0-ed8e-431d-9b8a-59a0fb2b2a76?sig=<sig>"}