JSON RPC 2.0洞穴错误意外结束JSON输入“

Question

我正在尝试使用JSON RPC，使用节点js请求方法。我正在使用本地客户端洞穴，当我调用请求时，我会收到错误消息

  

代码：-32700，“message”：“无法解析请求：json：无法将数组解组为类型为rpc.RPCRequest的Go值”

getAddressBalance = function() {

var url = "http://localhost:1337/rpc"; //connecting to local burrow client
var address = "0128AB28AADFB73433C4C3495A618C019097E158";// address got 300000 balance in account ;

var Balance={
    id:"0",
    method:"getBalance",
    params:{address},
    jsonrpc:"2.0",
}

var options = {
    "method": "POST",
    "url": url,
    "headers": {
      "content-type": "application/json"
    },
    "body": Balance,
    "json": true
};

//Request burrow client

request(options, function(error, response, decoded) {
     if (error) throw new Error(error);
     console.log(response);
     console.log(decoded);
});