json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "description": "Describe information needed for article entity.",
      "properties": {
          "_files": {
              "items": {
                  "$schema": "http://json-schema.org/draft-04/schema#",
                  "description": "Describe information needed for files in records.",
                  "properties": {
                      "bucket": {
                          "type": "string"
                      },
                      "checksum": {
                          "type": "string"
                      },
                      "key": {
                          "type": "string"
                      },
                      "size": {
                          "type": "integer"
                      },
                      "uri": {
                          "type": "string"
                      },
                      "version_id": {
                          "type": "string"
                      }
                  },
                  "title": "File schema.",
                  "type": "object"
              },
              "type": "array"
          },
          "author": {
              "type": "string"
          },
          "body": {
              "properties": {
                  "content": {
                      "type": "string"
                  },
                  "type": {
                      "type": "string"
                  }
              },
              "type": "object"
          },
          "collections": {
              "items": {
                  "title": "Collection",
                  "type": "object"
              },
              "type": "array"
          },
          "created": {
              "type": "string"
          },
          "experiment": {
              "type": "string"
          },
          "featured": {
              "type": "integer"
          },
          "id": {
              "title": "id",
              "type": "string"
          },
          "related": {
              "items": {
                  "properties": {
                      "id": {
                          "type": "string"
                      },
                      "type": {
                          "type": "string"
                      }
                  },
                  "type": "object"
              },
              "type": "array"
          },
          "screenshot": {
              "type": "string"
          },
          "short_description": {
              "properties": {
                  "content": {
                      "type": "string"
                  },
                  "type": {
                      "type": "string"
                  }
              },
              "type": "object"
          },
          "tags": {
              "items": {
                  "type": "string"
              },
              "type": "array"
          },
          "title": {
              "title": "Title",
              "type": "string"
          },
          "type": {
              "properties": {
                  "primary": {
                      "type": "string"
                  },
                  "secondary": {
                      "items": {
                          "type": "string"
                      },
                      "type": "array"
                  }
              },
              "type": "object"
          }
      },
      "title": "Article Schema.",
      "type": "object"
  }