REST Adapter: How to send Body with Raw type TEXT

Hi,

I need to create a interface SOAP --> PI --> REST, but the body of the MESSAGE is used RAW type TEXT rather than JSON.

The Text in the raw body is sent the connection data like user Name and Password.

I need to know how to Mapping the Data Type of SOAP source for the Body Raw-Text. On the screen below I'm testing the POST http://desenv.wappa.com.br/wsseguradoras/token using the Postman program within Google Chrome, but could also be used via SoapUI.

Someone has an idea to help me?

Tks!