add storage account to log analytics across subscriptions

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json",
  "contentVersion": "1.0.0.0",
  "parameters": {
      "subscriptionId": {
          "type": "string",
          "metadata": {
              "description": "Specify the subscription Id where your storage account is located"
          }
      },
    "omsWorkspaceName": {
      "type": "string",
      "defaultValue": "omsws01",
      "metadata": {
        "description": "Specify name of your OMS workspace"
      }
    },
    "omsRegion": {
      "type": "string",
      "defaultValue": "West Europe",
      "allowedValues": [
        "West Europe",
        "East US",
        "Southeast Asia"
      ],
      "metadata": {
        "description": "Select OMS region"
      }
    },
    "existingStorageAccountName": {
      "type": "string",
      "defaultValue": "mystorage",
      "metadata": {
        "description": "Specify the name of the existing storage account to add to OMS"
      }
    },
    "existingStorageAccountResourceGroupName": {
      "type": "string",
      "defaultValue": "myrgname",
      "metadata": {
        "description": "Resource group containing the storage account"
      }
    },
    "table": {
      "type": "string",
      "defaultValue": "WADServiceFabric*EventTable",
      "allowedValues": [
        "WADWindowsEventLogsTable",
        "WADServiceFabric*EventTable",
        "wad-iis-logfiles",
        "WADETWEventTable"
      ],
      "metadata": {
        "description": "Select the table to add to OMS"
      }
    }
  },
  "variables": {
    },
  "resources": [
    {
      "apiVersion": "2015-11-01-preview",
      "name": "[parameters('omsWorkspaceName')]",
      "location": "[parameters('omsRegion')]",
      "type": "Microsoft.OperationalInsights/workspaces",
      "properties": {
        "sku": {
          "name": "Free"
        }
      },
      "resources": [
        {
          "apiVersion": "2015-11-01-preview",
          "name": "[concat(parameters('existingstorageaccountName'),parameters('omsWorkspaceName'))]",
          "type": "storageinsightconfigs",
          "dependsOn": [
            "[concat('Microsoft.OperationalInsights/workspaces/', parameters('omsWorkspaceName'))]"
          ],
          "properties": {
            "containers": [ ],
            "tables": [
              "[parameters('table')]"
            ],
            "storageAccount": {
              "id": "[concat('/subscriptions/', parameters('subscriptionId'), '/resourceGroups/', parameters('existingStorageAccountResourceGroupName'),'/providers/Microsoft.Storage/storageaccounts/', parameters('existingStorageAccountName'))]",
              "key": "[listKeys(concat('/subscriptions/', parameters('subscriptionId'), '/resourceGroups/', parameters('existingStorageAccountResourceGroupName'),'/providers/Microsoft.Storage/storageAccounts/', parameters('existingStorageAccountName')),'2015-06-15').key1]"
            }
          }
        }
      ]
    }
  ],
  "outputs": { }
}