创建合同-签约节点信息

{
    "signNode": {
        "childType": "string",
        "data": [
            {
                "partyUuid": "string",
                "partyNumber": "string",
                "partyNumberType": "string",
                "signatoryEmpId": "string",
                "signatoryEmpCode": "string",
                "signatoryEmpCodeType": "ID",
                "signatoryName": "string"
            }
        ]
    }
}