input: def manage_user_data(data: dict) -> None:
      """ Store and retrieve user data using JSON format.
      >>> manage_user_data({
      ...     "Name": "John",
      ...     "Age": 25,
      ...     "City": "New York"
      ... })
      {'Name': 'John', 'Age': 25, 'City': 'New York'}
      """
      import json
      
      def store_user_data(data):
          with open('user_data.json', 'w') as f:
              json.dump(data, f)
  
      def get_user_data():
          with open('user_data.json') as f:
              return json.load(f)
  
      # store data in JSON file
      store_user_data(data)
  
      # get data
      retrieved_data = get_user_data()
      print(retrieved_data)
output:     import json
      
      def store_user_data(data):
          with open('user_data.json', 'w') as f:
              json.dump(data, f)
  
      def get_user_data():
          with open('user_data.json') as f:
              return json.load(f)
  
      # store data in JSON file
      store_user_data(data)
  
      # get data
      retrieved_data = get_user_data()
      print(retrieved_data)