在rateLimit错误后清除证书的待定授权（ACME）

这是从日志中拒绝的今天的示例：

2017-03-31 06:40:32,180:DEBUG:root:Sending POST request to https://acme-v01.api.letsencrypt.org/acme/new-authz. 
args: (), kwargs: {
    'data': '{
        "header": {
            "alg": "RS256",
            "jwk": {"e": "AQAB", "kty": "RSA", "n": "srgrg....huXi0sQ"}
        }, 
        "protected": "rsgrgs....ZJIn0", 
        "payload": "srgrg....In0", 
        "signature": "sgggserg....Tc-Q"
    }'
}

我怎样才能做到这一点？