json_schema: {
      "title": "SHARE ChangeSet JSONLD",
      "description": "A sub-set of JSONLD",
      "$schema": "http://json-schema.org/draft-04/schema#",
      "definitions": {
          "primitives": {
              "type": [
                  "string",
                  "number",
                  "boolean",
                  "null"
              ]
          },
          "reference": {
              "type": "object",
              "required": [
                  "@id",
                  "@type"
              ],
              "additionalProperties": false,
              "properties": {
                  "@type": {
                      "type": "string"
                  },
                  "@id": {
                      "type": "string"
                  }
              }
          }
      },
      "required": [
          "@graph"
      ],
      "additionalProperties": false,
      "properties": {
          "@context": {
              "type": "object"
          },
          "@graph": {
              "description": "Used to express a graph.",
              "type": "array",
              "items": {
                  "type": "object",
                  "required": [
                      "@id",
                      "@type"
                  ],
                  "properties": {
                      "extra": {
                          "type": "object"
                      },
                      "@type": {
                          "type": "string"
                      },
                      "@id": {
                          "type": [
                              "string",
                              "integer"
                          ]
                      }
                  },
                  "additionalProperties": {
                      "oneOf": [
                          {
                              "$ref": "#/definitions/reference"
                          },
                          {
                              "$ref": "#/definitions/primitives"
                          },
                          {
                              "type": "array",
                              "items": {
                                  "$ref": "#/definitions/reference"
                              }
                          }
                      ]
                  }
              }
          }
      }
  }