Display dbBlobId image in text component

I am using self-hosted Retool and have an image that is already uploaded for use elsewhere in the app that I also want to display as part of a text component. Importantly, it needs to be part of the default value for the component. The contents of this component will then be passed to an smtp query as the body of an email. The image has a source type of dbBlobId. I was hoping there was a way to modify the instructions here: Display images | Retool Docs for displaying an image with a Base64 string to work with a dbBlobId, but I haven't figured out how to make it work or if it is even possible. Any advice would be appreciated.