Hi,

On the latest version Json-Rpc request Id only supports numbers in the latest version as opposed to string, numbers and null.

Please see the current issue here: Nethereum/Nethereum#3
And spec here http://www.jsonrpc.org/specification#request_object

Not that needed here is the type:
https://github.com/ethereum/go-ethereum/blob/develop/rpc/types.go#L86-L91

and what I believe the old one:
https://github.com/ethereum/go-ethereum/blob/master/rpc/shared/types.go#L42-L47