curl --request POST \
  --url https://{cluster}.cognitedata.com/api/v1/projects/{project}/context/diagram/convert \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "items": [
    {
      "fileId": 1234,
      "annotations": [
        {
          "text": "21-PT-1019",
          "region": {
            "vertices": [
              {
                "x": 0.58,
                "y": 0.12
              }
            ],
            "page": 1
          },
          "confidence": 0.5,
          "entities": [
            {
              "userDefinedField": "21PT1017",
              "ignoredField": "AA11"
            },
            {
              "userDefinedField": [
                "21PT1017-A",
                "21PT1017-B"
              ]
            }
          ]
        }
      ]
    }
  ],
  "grayscale": true
}
'

{
  "items": [
    {
      "fileId": 1234
    }
  ],
  "jobId": 123,
  "createdTime": 1730204346000,
  "startTime": 1730204346000,
  "statusTime": 1730204346000,
  "errorMessage": null,
  "grayscale": true
}