{
  "Resources": {
    "SomeResource": {
      "Type": "AWS::Something",
      "Properties": {
        "Property": "new-value"
      }
    },
    "NestedStack": {
      "Type": "AWS::CloudFormation::Stack",
      "Properties": {
        "TemplateURL": "https://www.magic-url.com"
      },
      "Metadata": {
        "aws:asset:path": "one-resource-stack.nested.template.json"
      }
    }
  }
}