diff --git a/webapp/questionSchema.json b/webapp/questionSchema.json
new file mode 100644
index 0000000..25a274f
--- /dev/null
+++ b/webapp/questionSchema.json
@@ -0,0 +1,291 @@
+{
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "definitions": {
+        "CheckboxQuestion": {
+            "properties": {
+                "id": {
+                    "type": "string"
+                },
+                "options": {
+                    "properties": {
+                        "enum": {
+                            "items": {
+                                "type": "string"
+                            },
+                            "type": "array"
+                        },
+                        "enumNames_en": {
+                            "items": {
+                                "type": "string"
+                            },
+                            "type": "array"
+                        },
+                        "enumNames_fi": {
+                            "items": {
+                                "type": "string"
+                            },
+                            "type": "array"
+                        }
+                    },
+                    "type": "object"
+                },
+                "required": {
+                    "type": "boolean"
+                },
+                "title_en": {
+                    "type": "string"
+                },
+                "title_fi": {
+                    "type": "string"
+                },
+                "type": {
+                    "enum": [
+                        "checkbox"
+                    ],
+                    "type": "string"
+                }
+            },
+            "type": "object"
+        },
+        "EmailQuestion": {
+            "properties": {
+                "id": {
+                    "type": "string"
+                },
+                "required": {
+                    "type": "boolean"
+                },
+                "title_en": {
+                    "type": "string"
+                },
+                "title_fi": {
+                    "type": "string"
+                },
+                "type": {
+                    "enum": [
+                        "email"
+                    ],
+                    "type": "string"
+                }
+            },
+            "type": "object"
+        },
+        "InfoQuestion": {
+            "properties": {
+                "description_en": {
+                    "type": "string"
+                },
+                "description_fi": {
+                    "type": "string"
+                },
+                "id": {
+                    "type": "string"
+                },
+                "required": {
+                    "enum": [
+                        false
+                    ],
+                    "type": "boolean"
+                },
+                "title_en": {
+                    "type": "string"
+                },
+                "title_fi": {
+                    "type": "string"
+                },
+                "type": {
+                    "enum": [
+                        "info"
+                    ],
+                    "type": "string"
+                }
+            },
+            "type": "object"
+        },
+        "IntegerQuestion": {
+            "properties": {
+                "id": {
+                    "type": "string"
+                },
+                "options": {
+                    "properties": {
+                        "enum": {
+                            "anyOf": [
+                                {
+                                    "items": [
+                                        {
+                                            "items": {
+                                                "type": "string"
+                                            },
+                                            "type": "array"
+                                        }
+                                    ],
+                                    "maxItems": 1,
+                                    "minItems": 1,
+                                    "type": "array"
+                                },
+                                {
+                                    "items": [
+                                        {
+                                            "items": {
+                                                "type": "string"
+                                            },
+                                            "type": "array"
+                                        },
+                                        {
+                                            "items": {
+                                                "type": "string"
+                                            },
+                                            "type": "array"
+                                        }
+                                    ],
+                                    "maxItems": 2,
+                                    "minItems": 2,
+                                    "type": "array"
+                                }
+                            ]
+                        }
+                    },
+                    "type": "object"
+                },
+                "required": {
+                    "type": "boolean"
+                },
+                "title_en": {
+                    "type": "string"
+                },
+                "title_fi": {
+                    "type": "string"
+                },
+                "type": {
+                    "enum": [
+                        "integer"
+                    ],
+                    "type": "string"
+                }
+            },
+            "type": "object"
+        },
+        "NameQuestion": {
+            "properties": {
+                "id": {
+                    "type": "string"
+                },
+                "required": {
+                    "type": "boolean"
+                },
+                "title_en": {
+                    "type": "string"
+                },
+                "title_fi": {
+                    "type": "string"
+                },
+                "type": {
+                    "enum": [
+                        "name"
+                    ],
+                    "type": "string"
+                }
+            },
+            "type": "object"
+        },
+        "RadioQuestion": {
+            "properties": {
+                "id": {
+                    "type": "string"
+                },
+                "options": {
+                    "properties": {
+                        "enum": {
+                            "items": {
+                                "type": "string"
+                            },
+                            "type": "array"
+                        },
+                        "enumNames_en": {
+                            "items": {
+                                "type": "string"
+                            },
+                            "type": "array"
+                        },
+                        "enumNames_fi": {
+                            "items": {
+                                "type": "string"
+                            },
+                            "type": "array"
+                        }
+                    },
+                    "type": "object"
+                },
+                "required": {
+                    "enum": [
+                        true
+                    ],
+                    "type": "boolean"
+                },
+                "title_en": {
+                    "type": "string"
+                },
+                "title_fi": {
+                    "type": "string"
+                },
+                "type": {
+                    "enum": [
+                        "radiobutton"
+                    ],
+                    "type": "string"
+                }
+            },
+            "type": "object"
+        },
+        "TextQuestion": {
+            "properties": {
+                "id": {
+                    "type": "string"
+                },
+                "required": {
+                    "type": "boolean"
+                },
+                "title_en": {
+                    "type": "string"
+                },
+                "title_fi": {
+                    "type": "string"
+                },
+                "type": {
+                    "enum": [
+                        "text"
+                    ],
+                    "type": "string"
+                }
+            },
+            "type": "object"
+        }
+    },
+    "items": {
+        "anyOf": [
+            {
+                "$ref": "#/definitions/TextQuestion"
+            },
+            {
+                "$ref": "#/definitions/InfoQuestion"
+            },
+            {
+                "$ref": "#/definitions/IntegerQuestion"
+            },
+            {
+                "$ref": "#/definitions/RadioQuestion"
+            },
+            {
+                "$ref": "#/definitions/CheckboxQuestion"
+            },
+            {
+                "$ref": "#/definitions/EmailQuestion"
+            },
+            {
+                "$ref": "#/definitions/NameQuestion"
+            }
+        ]
+    },
+    "type": "array"
+}
diff --git a/webapp/views.py b/webapp/views.py
index c534caf..c66ecd2 100644
--- a/webapp/views.py
+++ b/webapp/views.py
@@ -1,5 +1,6 @@
 """Webapp views."""
 
+import json
 from jwt import decode
 from jwt.exceptions import InvalidTokenError
 from django.utils import timezone
@@ -29,6 +30,10 @@ from webapp.serializers import *
 from webapp.utils import admin_send_email_signupees, decode_base64_file
 
 
+with open("./webapp/questionSchema.json", "r") as file:
+    QUESTION_SCHEMA = json.load(file)
+
+
 class SignupPermission(BasePermission):
     def has_permission(self, request, view):
         if request.method == "POST":
@@ -125,9 +130,7 @@ class SignupFormViewSet(ModelViewSet):
 
     def create(self, request, *args, **kwargs):
         try:
-            schema = {
-                "type": "array",
-            }
+            schema = QUESTION_SCHEMA
             validate(instance=request.data["questions"], schema=schema)
             return super().create(request, *args, **kwargs)
         except ValidationError as err: