old_contents: export default {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "properties": {
          "sensorId": {
              "type": "string"
          },
          "date": {
              "type": "string",
              "format": "date-time"
          },
          "source": {
              "type": "string",
              "enum": [
                  "forecast",
                  "reading",
                  "reference"
              ]
          },
          "measurements": {
              "type": "array",
              "items": {
                  "type": "object",
                  "properties": {
                      "type": {
                          "type": "string"
                      },
                      "value": {
                          "type": "number"
                      },
                      "unitOfMeasurement": {
                          "type": "string"
                      }
                  },
                  "required": [
                      "type",
                      "value",
                      "unitOfMeasurement"
                  ],
                  "additionalProperties": false
              }
          }
      },
      "required": [
          "sensorId",
          "date",
          "measurements"
      ],
      "additionalProperties": false
  };
  
new_contents: export default {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "properties": {
          "sensorId": {
              "type": "string"
          },
          "date": {
              "type": "string",
              "format": "date-time"
          },
          "source": {
              "type": "string",
              "enum": [
                  "forecast",
                  "reading",
                  "reference"
              ]
          },
          "measurements": {
              "type": "array",
              "items": {
                  "type": "object",
                  "properties": {
                      "type": {
                          "type": "string"
                      },
                      "value": {
                          "type": "number"
                      },
                      "unitOfMeasurement": {
                          "type": "string"
                      }
                  },
                  "required": [
                      "type",
                      "value",
                      "unitOfMeasurement"
                  ],
                  "additionalProperties": true
              }
          }
      },
      "required": [
          "sensorId",
          "date",
          "measurements"
      ],
      "additionalProperties": true
  };
  
subject: Modify json schema