Rest Request RAW Message

Good Day,

I'm sending a rest request to an endpoint that doesn't accept key value pair parameter or form type request. Is there a way in rest request to archived this.

When the rest endpoint received the request, it is seeing with requestBody=xxxData.

What i want is, when the endpoint receives the data, it will be xxxData only without the requestParameter name.

I only want to received the the value of the requestBody 

Thanks,

Chris