f the previous block (if available)
  "nextblockhash" : "hex"         (string, optional) The hash of the next block (if available)
}

Result (for verbosity = 2):
{                   (json object)
  ...,              Same output as verbosity = 1
  "tx" : [          (json array)
    {               (json object)
      ...,          The transactions in the format of the getrawtransaction RPC. Different from verbosity = 1 "tx" result
      "fee" : n     (numeric) The transaction fee in BTC, omitted if block und