配置完推送地址后，当设备有流水、在线、离线时会向地址推送数据；
HTTP推送使用的method为post，Content-Type为application/json

离线/在线推送示例：

{
"notify_type": "online_state_change",
"device_id": "004a770124000016",
"timestamp": 1590748011000,
"data": [
{
"device_id": "004a770124000016",
"online_state": 0
}
]
}

online_state：0表示当前为离线，1表示为在线

流水推送示例：

{
"data": {
"current": 0,
"line_number": 16,
"active_power": 0,
"msg_type": "power",
"line_online_state": 1,
"voltage": 239.88
},
"device_category": "单相智能断路器",
"device_id": "J1912813017161",
"device_unit": "DLQ-RS485-15-0123",
"timestamp": 1635695999737,
"uuid": "bd0db83340f149708e400a142b6f060a",
"version": "V4.1"
}

device_id: 设备ID
device_unit: 设备型号
device_category: 设备类型
version: 当前物模型版本
data: 流水数据（内容与实际物模型相关）