List Signing Keys

{  "oidc": [    {      "kid": "string",      "alg": "string",      "status": "pending",      "backend": "software",      "kms_key_arn": "string",      "created_at": "2019-08-24T14:15:22Z",      "retired_at": "2019-08-24T14:15:22Z",      "cert_fingerprint_sha256": "string"    }  ],  "saml": [    {      "kid": "string",      "alg": "string",      "status": "pending",      "backend": "software",      "kms_key_arn": "string",      "created_at": "2019-08-24T14:15:22Z",      "retired_at": "2019-08-24T14:15:22Z",      "cert_fingerprint_sha256": "string"    }  ],  "jwks_uri": "string",  "saml_metadata_url": "string",  "saml_certificate_url": "string",  "kms_available": false,  "staging_max_age_days": 0}

{  "detail": [    {      "loc": [        "string"      ],      "msg": "string",      "type": "string",      "input": null,      "ctx": {}    }  ]}