{
  "schema": {
    "bsonType": "object",
    "required": [],
    "properties": {
      "_id": {
        "description": "ID，系统自动生成"
      },
      "user_id": {
        "bsonType": "string",
        "description": "用户id，参考uni-id-users表"
      },
      "changeKey": {
        "bsonType": "string",
        "description": "变化的内容，如：phone/email"
      },
      "oldVal": {
        "bsonType": "string",
        "description": "变化之前的旧值"
      },
      "newVal": {
        "bsonType": "string",
        "description": "变化之后的新值"
      },
      "ip": {
        "bsonType": "string",
        "description": "ip地址"
      },
      "create_date": {
        "bsonType": "timestamp",
        "description": "修改时间",
        "forceDefaultValue": {
          "$env": "now"
        }
      }
    }
  },
  "index": [
    {
      "IndexName": "user_id",
      "MgoKeySchema": {
        "MgoIndexKeys": [
          {
            "Name": "user_id",
            "Direction": "1"
          }
        ],
        "MgoIsUnique": false
      }
    }
  ]
}