Question

Is there a way that I can instruct WCF to accept JSON that is formatted using either single quotes (as opposed to double quotes):

{
   'foo': 'bar'
}

Or using non-quoted identifiers like so:

{
    foo: 'bar'
}

As it is, it seems like JSON will only be accepted if it is formatted like so:

{
    "foo": "bar"
}

Using either of the first two example results in a 400 (bad request).

Answer 1

The first two examples are invalid JSON texts.
http://www.ietf.org/rfc/rfc4627.txt

object = begin-object [ member *( value-separator member ) ]
end-object

member = string name-separator value

string = quotation-mark *char quotation-mark

quotation-mark = %x22      ; "