json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "id": "https://dcc.icgc.org/project-text",
      "type": "object",
      "properties": {
          "_summary": {
              "id": "https://dcc.icgc.org/project-text/_summary",
              "type": "object",
              "properties": {
                  "_state": {
                      "id": "https://dcc.icgc.org/project-text/_summary/_state",
                      "type": "string"
                  }
              },
              "additionalProperties": false
          },
          "id": {
              "id": "https://dcc.icgc.org/project-text/id",
              "type": "string"
          },
          "name": {
              "id": "https://dcc.icgc.org/project-text/name",
              "type": "string"
          },
          "primarySite": {
              "id": "https://dcc.icgc.org/project-text/primarySite",
              "type": "string"
          },
          "tumourSubtype": {
              "id": "https://dcc.icgc.org/project-text/tumourSubtype",
              "type": "string"
          },
          "tumourType": {
              "id": "https://dcc.icgc.org/project-text/tumourType",
              "type": "string"
          },
          "type": {
              "id": "https://dcc.icgc.org/project-text/type",
              "type": "string"
          }
      },
      "additionalProperties": false
  }