json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "properties": {
          "description": {
              "type": [
                  "string",
                  "null"
              ]
          },
          "followers": {
              "type": "integer"
          },
          "following": {
              "type": "integer"
          },
          "isVerified": {
              "type": "boolean"
          },
          "name": {
              "type": "string"
          },
          "userId": {
              "type": "string"
          },
          "username": {
              "type": "string",
              "description": "the last segment of what Instagram calls a \"vanity url\""
          },
          "posts": {
              "type": "integer"
          }
      },
      "additionalProperties": false,
      "required": [
          "description",
          "followers",
          "following",
          "isVerified",
          "name",
          "posts",
          "userId",
          "username"
      ]
  }