json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Media Scene",
      "description": "A document representing a collection of media assets and their tags",
      "type": "object",
      "properties": {
          "_id": {
              "description": "unique identifier for this scene",
              "type": "string"
          },
          "name": {
              "description": "human readable name to refer to the scene by",
              "type": "string"
          },
          "displayDuration": {
              "description": "How many seconds atemporal assets should be on the screen for",
              "type": "number"
          },
          "displayInterval": {
              "description": "How many seconds should be between the showing of assets on the screen",
              "type": "number"
          },
          "transitionDuration": {
              "description": "How many seconds it should take for an asset to appear/disappear from the screen",
              "type": "number"
          },
          "maximumOnScreen": {
              "description": "maximum counts of media types allowed on the screen at one time",
              "type": "object",
              "properties": {
                  "image": {
                      "type": "integer"
                  },
                  "text": {
                      "type": "integer"
                  },
                  "video": {
                      "type": "integer"
                  },
                  "audio": {
                      "type": "integer"
                  }
              }
          },
          "themes": {
              "description": "represents sets of tags bundled together to make a coherent theme. Each property represents a singular theme.",
              "type": "object",
              "additionalProperties": {
                  "description": "Comma seperated list of tags that belong to this theme.",
                  "type": "string"
              }
          },
          "scene": {
              "description": "a collection of objects representing the various assets of a scene",
              "type": "array",
              "items": {
                  "type": "object",
                  "properties": {
                      "_id": {
                          "description": "unique identifier for this scene",
                          "type": "string"
                      },
                      "url": {
                          "description": "Url pointing to media asset if neccessary. Used for images, video, and audio.",
                          "type": "string"
                      },
                      "text": {
                          "description": "Text to display for text media asset.",
                          "type": "string"
                      },
                      "type": {
                          "description": "Kind of media it is (only 'image', 'text', 'video', and 'audio' is supported)",
                          "type": "string"
                      },
                      "tags": {
                          "description": "Semantic tags for this asset, comma seperated",
                          "type": "string"
                      }
                  },
                  "required": [
                      "_id",
                      "type",
                      "tags"
                  ]
              }
          }
      },
      "required": [
          "_id",
          "name",
          "scene"
      ]
  }