FreeSSLCertNested.json

{
    "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "webAppName": {
            "type": "string"
        },
        "customDomain": {
            "type": "string"
        },
        "location": {
            "type": "string"
        },
        "certificateThumprint": {
            "type": "string"
        }
    },
    "resources": [
        {
            "type": "Microsoft.Web/sites/hostnameBindings",
            "name": "[concat(parameters('webAppName'), '/', parameters('customDomain'))]",
            "apiVersion": "2016-03-01",
            "location": "[parameters('location')]",
            "properties": {
                "sslState": "SniEnabled",
                "thumbprint": "[parameters('certificateThumprint')]"
            }
        }
    ]
}