Facing some Error when creating event Error Code : UnableToDeserializePostBody

Question

I am trying to create a microsoft teams meeting using graph API(post).

I have used Post request(v1.0) to a url : https://graph.microsoft.com/v1.0/me/events and I am using "application/json" as content type .

But, when I triggered the url, It is throwing me an 400 error :"code": "UnableToDeserializePostBody".

I have provided all the details in the body like :attendees,starttime,endtime and also below parameters.

"isOnlineMeeting": "True",
"onlineMeetingProvider": "teamsForBusiness"

Please kindly help me to resolve this issue!