json_schema: {
      "description": "Info on user created collections",
      "properties": {
          "_$id": {
              "description": "Name of a user created collection's schema",
              "type": "string"
          },
          "fields": {
              "additionalProperties": {
                  "properties": {
                      "app_title": {
                          "type": "string"
                      },
                      "app_type": {
                          "type": "string"
                      },
                      "app_values": {
                          "additionalProperties": {
                              "type": [
                                  "string",
                                  "number"
                              ]
                          },
                          "type": "object"
                      }
                  },
                  "required": [
                      "app_title",
                      "app_type"
                  ],
                  "type": "object"
              },
              "type": "object"
          }
      },
      "title": "App Collections",
      "type": "object"
  }