Valid JSON, but 'Cocoa error 3840' from AFNetworking/NSJSONSerialization
NSJSONSerialization uses NSDecimalNumber to represent numbers, and
[NSDecimalNumber decimalNumberWithString:@"4.439049394553e-312"]already returns NaN, because NSDecimalNumber can represent only numbers
mantissa x 10^exponent where `-128 <= exponent <= 127`.So this seems to be a "restriction" (or bug) of NSJSONSerialization, that it works only withnumbers in a certain range.
I made a quick test with "SBJsonParser" and it had the same problem.