input: Write a python function to process a nested JSON object and return a dictionary. 
  assert process_json({"a": {"b": {"c": 1}}, "d": 2}) == {"a": {"b": {"c": 1}}, "d": 2}
  assert process_json({"x": {"y": {"z": {"w": 5}}}, "v": 3}) == {"x": {"y": {"z": {"w": 5}}}, "v": 3}
  assert process_json({"key1": {"key2": {"key3": "value"}}, "key4": [1, 2, 3]}) == {"key1": {"key2": {"key3": "value"}}, "key4": [1, 2, 3]}
output: def process_json(nested_json):
      return nested_json