Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number: 1 (0x1)
        Signature Algorithm: ecdsa-with-SHA256
        Issuer: O=Mijia Root, C=CN
        Validity
            Not Before: May 23 06:28:50 2018 GMT
            Not After : May 10 06:28:50 2068 GMT
        Subject: O=Mijia Cloud, C=CN, CN=Mijia Cloud
        Subject Public Key Info:
            Public Key Algorithm: id-ecPublicKey
                Public-Key: (256 bit)
                pub:
                    04:a7:52:ec:d4:4b:6b:3b:17:ab:c3:4f:83:00:c6:
                    32:0f:2e:4c:be:c5:7a:51:03:4b:5e:ca:df:73:47:
                    d7:45:df:8c:3d:bc:fa:ae:db:67:b0:4c:ac:e5:af:
                    f7:98:18:2e:43:c5:a4:44:b6:27:c2:d7:f3:61:62:
                    9d:3f:91:48:02
                ASN1 OID: prime256v1
                NIST CURVE: P-256
        X509v3 extensions:
            X509v3 Authority Key Identifier: 
                96:B7:A2:7C:39:B1:B9:66:33:A9:F8:D1:09:B2:00:60:C8:E6:C5:11
            X509v3 Subject Key Identifier: 
                5A:29:BF:FB:2F:B7:50:0C:E9:C4:20:F2:3D:89:9B:6F:E0:80:32:93
    Signature Algorithm: ecdsa-with-SHA256
    Signature Value:
        30:45:02:21:00:92:14:59:96:08:b6:51:b6:19:4a:80:52:0e:
        21:39:b1:47:dd:1b:0c:d5:1d:79:31:54:56:25:1f:28:24:74:
        90:02:20:0b:9e:2d:57:18:37:e3:6a:7a:5e:60:8a:75:f7:97:
        c7:00:1c:af:ba:94:a1:e0:3a:84:09:f9:76:77:e1:af:ad