Need MAP record update command

1

Hi All,

I am having a record of MAP type like below and want to remove subIds from it. Could you please let me know how to do that using AQL

      "groups": {
        "group_9155422947713745021": {
          "states": {},
          "childDeviceIds": [
            "9155422947713745021||2300000487a8c01"
          ],
          "groupName": "group_9155422947713745021",
          "name": "group_9155422947713745021",
          "creationTime": 1571571136461,
          "traversalOrder": 0,
          "schemaVersion": 0,
          "subIds": [
            "f3a508e2-5a18-42a0-b5c6-ab79effb9b08||2300000487a0c01"
          ],
          "notifProfile": "RakutenNotificationProfileGroup",
          "id": "group_9155422947713745021||2300000487a8c01",
          "lifeCycleNames": {},
          "administrators": [
            "817084250814||2300000487a8c01"
          ],
          "lastUpdateTime": 1571968091106
        }
      },

MAP('{“group_9155422947713745021”:{“states”:{0:“GroupLifeCycle_Active”}, “childDeviceIds”:[“9155422947713745021||2300000487a8c01”], “groupName”:“group_9155422947713745021”, “name”:“group_9155422947713745021”, “creationTime”:1571571136461, "traversalOrder | 157625988173958145