5. GetHyperBlocKBody 获取超块体信息

* 参数: key块号

* 例子: http://127.0.0.1:8080/GetHyperBlockBody?key=10

* 返回例子：

{
  "auth":"",
  "br_addrs":[],
  "local_blocks_header_hash":[
    [
      "b174b4cc7b12b919903d023c5ddfe7fbc47efa6e1d53e75a4911ed8caf3c136e",
      "1888b205bdb68933c330d7adcd50eb160d9a7479a1dfefe7476a64f29a416647"
    ]
  ],
  "script":""
}