json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "avalon-core:subset-2.0",
      "description": "A container of instances",
      "type": "object",
      "additionalProperties": true,
      "required": [
          "schema",
          "type",
          "parent",
          "name",
          "data"
      ],
      "properties": {
          "schema": {
              "description": "The schema associated with this document",
              "type": "string",
              "enum": [
                  "avalon-core:subset-2.0"
              ],
              "example": "avalon-core:subset-2.0"
          },
          "type": {
              "description": "The type of document",
              "type": "string",
              "enum": [
                  "subset"
              ],
              "example": "subset"
          },
          "parent": {
              "description": "Unique identifier to parent document",
              "example": "592c33475f8c1b064c4d1696"
          },
          "name": {
              "description": "Name of directory",
              "type": "string",
              "pattern": "^[a-zA-Z0-9_.]*$",
              "example": "shot01"
          },
          "data": {
              "type": "object",
              "description": "Document metadata",
              "example": {
                  "frameStart": 1000,
                  "frameEnd": 1201
              }
          }
      }
  }