curl -X POST http://xxx.yyy.zzz:5555/job/job-name/build --user john-devops-jenkins:11df3ed41129c5c7da1518e9c3149896de -H \'Jenkins-Crumb:31827a74a160347a641c87ddbc8e3b6e
After a day of effort and brainstorming of how curl requests execute, finally resolved this issue by configuring bitbucket webhook as below:
http://jenkins-username:jenkins-password@jenkins-url:5555/job/job-name/build?crumb=crumb_token.
Hope it helps, many questions are unanswered and all are suggesting to use third party or generic-web-hooks and so on.