json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "required": [
          "TableName",
          "StreamViewType"
      ],
      "additionalProperties": false,
      "properties": {
          "TableName": {
              "type": "string"
          },
          "StreamViewType": {
              "type": "string",
              "enum": [
                  "NEW_IMAGE",
                  "OLD_IMAGE",
                  "NEW_AND_OLD_IMAGES",
                  "KEYS_ONLY"
              ]
          }
      }
  }