You should be able to get it to work with REST. You need to ensure you have set up an RDP and REST Consumer. Can you please explain what steps you took and what your configuration looks like and finally, what error are you getting so we can help debug?
I wrote this post earlier which explains how to use Solace’s REST feature to integrate with AWS Lambda. You can have a look at it for reference. Ignore the lambda part but the REST stuff should be applicable.