微信模板消息发送返回格式错误

[绝世酱油瓶]

如何,参考官方文档做模板消息发送，一直返回47001错误，比对了json数据格式没有问题，编码使用的UTF-8

{"touser":"oDpUvvx9RpBojihiM_1n5n0H_3lM","template_id":"ngqIpbwh8bUfcSsECmogfXcV14J0tQlEpBO27izEYtY","url":"http://weixin.qq.com/download","topcolor":"#00DD00","data":{"first": {"value":"1111","color":"#FF3333"},"keynote1": {"value":"2222","color":"#0044BB"},"keynote2": {"value":"2600","color":"#0044BB"},"keynote3": {"value":"123456","color":"#AAAAAA"},"remark": {"value":"222","color":"#AAAAAA"}}}