There was an example with client side code to make a call to the Cognito Service from AWS
I’m not running any additional servers, the code is open source and free to modify, it essentially takes advantage of the server side actions’ ability to support node modules.
See more here : [New Feature] Server side actions now support node modules
The code uses the crypto JS library to handle the recursive hashing that I couldn’t get done with bubble alone. I thought I would share it.
I have no experience setting up an AWS server,
I have used the resulting signature to make calls successfully to the execute-api through the Amazon API Gateway.