How to add a marketplace deployment model?

I am playing around with Bedrock's marketplace deployment feature. From the model catalog, I deployed the Mistral Pixtral model. Do you have any instructions on how to get the app to use the deployed model? I tried copying the endpoint ARN into config.json, but that didn't do the trick.

Start by reading config.json and the app's existing Bedrock setup to determine how model endpoints are configured. Verify whether a marketplace deployment ARN can be represented by the current configuration, then document the required steps and confirm that the app uses the deployed Mistral Pixtral model.

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