Request Headers:
Content Type: application/json
Ocp-Apim-Subscription-Key: ********************
Authorization: Bearer *********************
Request Body
{
  "getEventListenerMessage": {
    "eventListnerRequest": {
      "partnerKey": "[PARTNERKEY]",
      "systemID": "UNIQUE ID",
      "timeoutInSeconds": 60,
      "startDate": "",
      "endDate": ""
    }
  }
}