I have one python script which can successfully update event in confluence calender using below request
import requests
import json
baseURL = 'https://confluence.example.com/rest/calendar-services/1.0/calendar/events.json'
headers = { "content-type" : "application/x-www-form-urlencoded" }
user='****'
password='****'
hd={'Content-Type': 'application/json'}
calenderData = {"subCalendarId":"7ed3840a-6e3e-4043-a4da-be02a8208eaf","eventType":"Events", "what":"Test Deployment", "person": ["******"],"startDate":"28-Apr-2020","endDate": "28-Apr-2020","allDayEvent": "true","where": "By" }
response = requests.put(baseURL, headers=headers, auth=(user, password), data=calenderData, timeout=15)
But same request if I do by groovy using CURL command it showing null event error
def response = ["curl", "-k", "-u", user:password, "-X", "PUT", "-d", "${calenderData}", "-H", "Content-Type:application/json", "${baseURL}"].execute().text