Can a merge field placeholder be used for the webhook callback url value?
For example, can you create a template with a placeholder for the callback value using the following request body for an Edit API request to POST /templates endpoint
{
"name": "Example Template",
"template": {
...
"callback": "{{ CALLBACK }}"
}
}
And then use the following request body for an Edit API request to POST /templates/render endpoint to replace the MergeField placeholder for {{ CALLBACK }}?
{
"id": "not-a-real-id",
"merge": [
{
"find": "CALLBACK",
"replace": "not-a-real-callback-url"
}
]
}