Google GCP Audit Logs Mapping Issue

Elastic Stack Elasticsearch
1

I've been trying to fix a dynamic mapping for the GCP audit logs (Google Cloud), and I can't figure out a way to fix the mapping schema. The problem is related to "Object in arrays are not well supported" for a specific filed "authorizationInfo" in the logs.

an array of objects:

    "authorizationInfo" : [
        {
            "resourceAttributes" : {
                "service" : "resourcemanager",
                   "type" : "resourcemanager.projects",
                   "name" : "some_random_name"
            },
                    "permission" : "compute.instances.list",
                       "granted" : true
        }
    ],

sample log:

{
        "severity" : "INFO",
            "host" : null,
         "logName" : "/logs/cloudaudit.googleapis.com%2Fdata_access",
        "insertId" : "XXXXXXXXX",
       "messageId" : "XXXXXXXXX",
    "protoPayload" : {
           "serviceName" : "compute.googleapis.com",
                 "@type" : "type.googleapis.com/google.cloud.audit.AuditLog",
    "authenticationInfo" : {
        "principalEmail" : "XXXX@email.com"
    },
     "authorizationInfo" : [
        {
            "resourceAttributes" : {
                "service" : "resourcemanager",
                   "type" : "resourcemanager.projects",
                   "name" : "some_random_name"
            },
                    "permission" : "compute.instances.list",
                       "granted" : true
        }
    ],
            "methodName" : "compute.instances.list",
      "resourceLocation" : {
        "currentLocations" : [
            "east-us"
        ]
    },
          "resourceName" : "/zones/instances",
               "request" : {
        "@type" : "type.googleapis.com/compute.instances.list"
    },
       "requestMetadata" : {
                  "callerNetwork" : "/global/networks/__unknown__",
        "callerSuppliedUserAgent" : "google-api-nodejs-client/0.10.0,gzip(gfe)",
              "requestAttributes" : {
            "auth" : {},
            "time" : "2010-07-12T06:25:31.891Z"
        },
                       "callerIp" : "xx.xxx.xxx.xx",
          "destinationAttributes" : {}
    }
},
       "timestamp" : "2010-07-12T06:25:31.802Z",
        "resource" : {
      "type" : "gce_instance",
    "labels" : {
               "zone" : "east-us",
        "instance_id" : "",
         "project_id" : "some_random_name"
    }
},
        "@version" : "1",
"receiveTimestamp" : "2010-07-12T06:25:32.110631747Z",
      "@timestamp" : "2010-07-12T06:25:32.338Z"
2

I think the issue is that Kibana won't show the results after implementing nested data type, and this made me confused.