# your code goes here
import re
import json

text ={"id": 5931,"iid": 4145,"project_id": 57,"title": "Change: SELAP-3333, SFCAP-3139","state": "opened SELAP-3333","created_at": "2020-09-24T15:04:05.728+02:00","updated_at": "2020-09-24T15:04:09.903+02:00","author": {"username": "veeti"}}

data = json.dumps(text)

change_id_regex = re.compile(r"""([A-Z][A-Z0-9]+-[0-9]+)""")

#replaced_json = re.sub(change_id_regex, "test", data["title"])
replaced_json = re.sub(change_id_regex, "test", data)
        
print( replaced_json )# your code goes here