json_schema: {
      "$schema": "http://json-schema.org/draft-07/schema#",
      "title": "Multiple user details",
      "description": "All fields present in a multi-user data request.",
      "type": "array",
      "additionalProperties": true,
      "required": [
          "result",
          "jsonrpc",
          "id"
      ],
      "items": {
          "jsonrpc": {
              "type": "string",
              "enum": [
                  "2.0"
              ]
          },
          "result": {
              "type": "array",
              "additionalItems": false,
              "items": {
                  "type": "object",
                  "additionalProperties": false,
                  "required": [
                      "id",
                      "memberType",
                      "firstName",
                      "middleName",
                      "lastName",
                      "email",
                      "startDate",
                      "endDate",
                      "memberDay"
                  ],
                  "properties": {
                      "id": {
                          "type": "number"
                      },
                      "memberType": {
                          "type": "array",
                          "uniqueness": "true",
                          "additionalItems": false,
                          "items": {
                              "type": "string",
                              "enum": [
                                  "lid",
                                  "begeleider",
                                  "bestuur",
                                  "sponsor",
                                  "ondersteuning",
                                  "aspirant_begeleider",
                                  "strippenkaart"
                              ]
                          }
                      },
                      "firstName": {
                          "oneOf": [
                              {
                                  "type": "null"
                              },
                              {
                                  "type": "string"
                              }
                          ]
                      },
                      "middleName": {
                          "oneOf": [
                              {
                                  "type": "null"
                              },
                              {
                                  "type": "string"
                              }
                          ]
                      },
                      "lastName": {
                          "oneOf": [
                              {
                                  "type": "null"
                              },
                              {
                                  "type": "string"
                              }
                          ]
                      },
                      "email": {
                          "oneOf": [
                              {
                                  "type": "null"
                              },
                              {
                                  "type": "string",
                                  "format": "email"
                              }
                          ]
                      },
                      "startDate": {
                          "oneOf": [
                              {
                                  "type": "null"
                              },
                              {
                                  "type": "string",
                                  "format": "^\\d{4}-\\d{2}-\\d{2}$"
                              }
                          ]
                      },
                      "endDate": {
                          "oneOf": [
                              {
                                  "type": "null"
                              },
                              {
                                  "type": "string",
                                  "format": "^\\d{4}-\\d{2}-\\d{2}$"
                              }
                          ]
                      },
                      "memberDay": {
                          "oneOf": [
                              {
                                  "type": "null"
                              },
                              {
                                  "type": "string",
                                  "enum": [
                                      "ma",
                                      "di",
                                      "wo",
                                      "do",
                                      "vr",
                                      "za",
                                      "zo"
                                  ]
                              }
                          ]
                      }
                  }
              }
          },
          "id": {
              "type": "number"
          }
      }
  }