Integrate Robotframework with Z scale

I need to upload Robotframework results to Z scale Data center. To achieve this I need to follow below steps:

1. Convert xml to JSON file
2. Using POSTMAN need to upload that JSON to Z scale data center

I tried to convert to json in online but could not able to POST the file getting incorrect file.

format should be like below example

{
  "version": 1,
  "executions": [
    {
      "result": "Pass",
      "testCase": {
        "key": "AERT-T1097"
      }
    }
  ]
}

Did anyone succeed integrating robotframework with ZS datacenter? please provide the solution to achieve this.

Thanks