Bitbucket webhook doesnt contain Content-Type: application/json in its header

[pupie]

Hi,

I tried to configure Bitbucket 5.5 repository web-hook so that it could post event to 3rd party notification service. (DingTalk).

I tried with test connection button but the service always report that the post action should have a header with "Content-Type: application/json". 

I checked the data from bitbucket, it seems that the data posted does not have this value field in its header. 

How to configure the webhook or modify bitbucket files to workaround this issue?

thanks.