send whatsapp messages with Twilio using custom action in journeys. - send application/x-www-form-urlencoded for AJO

Description -

Why is this feature important to you - Twilio is one of largest providers, and there is no way to directly send Whatapp messages in AJO

currently AJO can send only JSON messages while  Twilio (and maybe other providers) accept only application/x-www-form-urlencoded

How would you like the feature to work -  built in action for WhatsApp or have the ability to send application/x-www-form-urlencoded with custom action , not just JSON 

Current Behaviour - According to the documentation for Adobe Journey Optimizer, when configuring a custom action, the Content-Type header is set by default and cannot be deleted. However, the value of this header is expected to be in JSON format. This indicates that the native support for sending payloads is primarily designed for JSON content types, and does not mention direct support for application/x-www-form-urlencoded or multipart/form-data. Therefore, the answer to the question is that Journey Optimizer does not natively support sending payloads in application/x-www-form-urlencoded or multipart/form-data content types.