Paypal在Parse云代码授权错误

Question

为了确认付款，我需要access_token。 我正在尝试使用httpRequest来获取它：

Parse.Cloud.define("CheckPayment", function(request, response) {

var basicAuthString = "Basic AXo3jRDk:EEjf1hDMO5t0sKRXqHC62d";

    Parse.Cloud.httpRequest({
        method:"POST",
        url: "https://api.sandbox.paypal.com/v1/oauth2/token", 
        headers: {
            "Authorization":basicAuthString,
            "Accept-Language": "en_US",
            "Accept": "application/json"
        },
        body:{
            grant_type:"client_credentials"
        },
        success: function(httpResponse) {
            console.log(httpResponse.text);
            response.success(httpResponse.text);
        },
        error: function(httpResponse) {
            console.error("Request failed with response code " + httpResponse.status);
            response.error(httpResponse.text);
        }
    });
});

要做以下卷曲：

curl -v https://api.sandbox.paypal.com/v1/oauth2/token \
  -H "Accept: application/json" \
  -H "Accept-Language: en_US" \
  -u "{client-ID}:{secret}" \
  -d "grant_type=client_credentials"

我收到错误：

{"error":"invalid_client","error_description":"Invalid client credentials"}

你能帮帮我吗？我究竟做错了什么？ 感谢