保證金模式推送

{
    "topic": "/contract/marginMode",
    "type": "message",
    "subject": "user.config",
    "userId": "6687a53f5bda600012b84bf",
    "channelType": "private",
    "data": {
        "ANTUSDTM": "CROSS"
    }
}

Topic:/contract/marginMode