curl --request POST \
  --url https://api.example.com/api/v2/projects/{project_id}/datasets/id/{dataset_id}/test-cases \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "examples": [
    {
      "inputs": {},
      "history": null,
      "output": null,
      "metadata": null,
      "media_inputs": null,
      "output_message": {
        "content": "<string>",
        "role": "user"
      }
    }
  ]
}
'

{
  "message": "<string>"
}