How to setup a custom request body for external systems?

Summary:

Hi team!

I had a question regarding OTM external system, specifically for authentication mechanism. As per the documentation, there are multiple ways to do auth using oauth 2.0 client credentials, password grant, jwt bearer token, etc.

Is it possible to send a custom JSON request with credentials in body? I believe OTM sends it in the header as a b64 string and passes [{"key":"grant_type","value":"client_credentials"}] inside the body, can it be customized by using any other authentication mechanism? Also, can this content-type be changed to "application/json" instead of url encoded?

Thanks and BR,

Aditya

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