我通过下方API接收小店客服消息

https://developers.weixin.qq.com/doc/store/shop/API/kf/receive_msg_event/receive_msg_event.html

当客户发送的文本中包含手机号时程序解码加密文本后仍然无法取得完整手机号，请问应该如何处理才能获取完整手机号？

{
	"ToUserName": "A",
	"FromUserName": "B",
	"CreateTime": 1753146632,
	"MsgType": "event",
	"Event": "commkf_send_msg_to_kf",
	"msg_id": "4086175385204064262",
	"msg_type": "text",
	"msg_event": "EVENT_TYPE_SEND_MSG",
	"text": {
		"content": "微信号是131******78"
	}
}