json_schema: {
      "title": "Custom record schema v1.0.0",
      "id": "http://localhost:5000/schemas/custom-record-v1.0.0.json",
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "properties": {
          "title": {
              "type": "string",
              "description": "Record title."
          },
          "description": {
              "type": "string",
              "description": "Description for record."
          },
          "references": {
              "type": "array",
              "items": {
                  "type": "object"
              }
          },
          "custom_pid": {
              "type": "string"
          }
      }
  }