401 Unauthorized for /bonita/API/bpm/userTask/80019/execution

Bonita BPM Studio Version: 7.8.4
I have create a new instance of a process and trying to complete them using Rest APIs using postman as Rest Client. Steps followed

1. Login in using the task onwer credentials , helen.kelly
   POST /bonita/loginservice

Task and Owner Details:
Task Details:80019

{
"displayDescription": "",
"executedBy": "0",
"rootContainerId": "4007",
"assigned_date": "2019-07-11 10:48:16.613",
"displayName": "Review Request",
"executedBySubstitute": "0",
"dueDate": "",
"description": "",
"type": "USER_TASK",
"priority": "normal",
"actorId": "410",
"processId": "8955091866381748903",
"caseId": "4007",
"name": "Review Request",
"reached_state_date": "2019-07-11 10:48:16.615",
"rootCaseId": "4007",
"id": "80019",
"state": "ready",
"parentCaseId": "4007",
"last_update_date": "2019-07-11 10:48:16.615",
"assigned_id": "3"
}
User Details:
User Details:

{
"firstname": "Helen",
"icon": "icons/default/icon_user.png",
"creation_date": "2019-07-03 08:21:19.173",
"userName": "helen.kelly",
"title": "Mrs",
"created_by_user_id": "-1",
"enabled": "true",
"lastname": "Kelly",
"last_connection": "2019-07-11 10:48:07.211",
"password": "",
"manager_id": "1",
"id": "3",
"job_title": "Human resource manager",
"last_update_date": "2019-07-03 08:21:19.173"
}

1. Executing the Task
   POST /bonita/API/bpm/userTask/80019/execution
   POST /bonita/API/bpm/userTask/80019/execution HTTP/1.1
   Content-Type: application/json
   User-Agent: PostmanRuntime/7.15.2
   Accept: /
   Cache-Control: no-cache
   Postman-Token: 44c62873-dda3-45da-9008-292d8d56881f
   Host: localhost:8080
   Cookie: bonita.tenant=1; X-Bonita-API-Token=ec41d0ac-1686-4b29-b89a-a53b6fb0a93b; JSESSIONID=A56D85A14A1F326AFF1E475405498C8F
   Accept-Encoding: gzip, deflate
   Content-Length: 45
   Connection: keep-alive

Response

HTTP/1.1 401