json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "Investment Info",
      "type": "object",
      "additionalProperties": false,
      "properties": {
          "activity": {
              "$ref": "#/definitions/InvestmentActivity"
          },
          "security": {
              "$ref": "#/definitions/Security"
          },
          "transaction": {
              "$ref": "#/definitions/InvestmentTransaction"
          }
      },
      "definitions": {
          "InvestmentActivity": {
              "type": "object",
              "additionalProperties": false,
              "properties": {
                  "label": {
                      "type": "string"
                  },
                  "type": {
                      "type": "integer"
                  }
              }
          },
          "Security": {
              "type": "object",
              "additionalProperties": false,
              "properties": {
                  "_id": {
                      "type": "integer",
                      "description": "A unique ID for Security"
                  },
                  "name": {
                      "type": "string"
                  },
                  "symbol": {
                      "type": "string"
                  }
              }
          },
          "InvestmentTransaction": {
              "type": "object",
              "additionalProperties": false,
              "properties": {
                  "_id": {
                      "type": "integer",
                      "description": "A unique ID for InvestmentTransaction"
                  },
                  "price": {
                      "type": "number"
                  },
                  "quantity": {
                      "type": "number"
                  }
              }
          }
      }
  }