下面是接口返回的json，需要取到其中的汇率，真心求解？

{

  "data": {
    "exchange_rate": {
      "audXchrAmtCny": 4.875208470492,
      "cadXchrAmtCny": 4.9292526828871,
      "eurXchrAmtCny": 7.5548122307071,
      "gbpXchrAmtCny": 8.5676732535169,
      "hkdXchrAmtCny": 0.81583454501083,
      "idrXchrAmtCny": 0.00045921417128527,
      "jpyXchrAmtCny": 0.058222346348425,
      "krwXchrAmtCny": 0.005948153454563,
      "mxnXchrAmtCny": 0.31179448640017,
      "myrXchrAmtCny": 1.6065455085719,
      "phpXchrAmtCny": 0.12056443556003,
      "rmbXchrAmt": 168.11940169985,
      "rmbXchrAmtJpy": 17.175535901896,
      "sgdXchrAmtCny": 4.7970501234378,
      "thbXchrAmtCny": 0.19970450232087,
      "twdXchrAmtCny": 0.21454120018859,
      "updatedTime": 1528783522000,
      "usdXchrAmt": 1076.2461230702,
      "usdXchrAmtCny": 6.4016770949,
      "usdXchrAmtJpy": 109.9522347758,
      "vndXchrAmtCny": 0.00028043086938222,
      "xchrStdDt": "20180612"
    }
  },
  "msg": "success",
  "code": 2000

}