How to set an object field to null for a REST service especially in camel-salesforce component?

Issue

We are using the Camel Salesforce Component to interact with Salesforce. We have a scenario where we need to clear the content of a specific field.

To do so again the Salesforce REST API directly, we need to provides that field in the request with a null value, e.g. clear out the Fax field of the Account, it has to be like:

{
"Id": "0012800000mm2eoAAA",
"Name" : "nullfax",
"Fax": null
}

Doing this through the Camel Salesforce Component does not seem to be possible. Is there supposed to be another method using Camel Salesforce Component to clear a field on a SObject?