We are using JIRA Automation and we have a rule setup to create an issue. We're using the "Additional fields" section but we want to pass the raw JSON from our server to the webhook. It looks like {{webhookData}} can only read string values, is this correct? I can do {{webhookData.fields.summary}} to read the summary but I want to just treat {{webhookData}} as actual JSON and not a string. That way we can control what gets set from our server that is calling the webhook.