Escape arbitrary strings for the rest processor

ONE DATA Core
1

The Flexible REST API processor throws a parsing Exception when i insert data from a column to the body.

Is there a regex to escape all signs which would through a JSON parse Error?
Is there a list of signs i do have to escape ?

Context
I am using a column to determine the body of the Flexible REST API processor like so:

{
    "Bodyfield": "##columnValueFrom##mycolumnWithAllSortsOfStrings##"
}

There will be all sorts of strings in the column “mycolumnWithAllSortsOfStrings”.