curl --request POST \
  --url https://api.example.com/v1/datasets/upload \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "inputs": [
    {}
  ],
  "action": "create",
  "description": "<string>",
  "outputs": [
    {}
  ],
  "metadata": [
    {}
  ],
  "splits": [
    "<string>"
  ],
  "span_ids": [
    "<string>"
  ],
  "example_ids": [
    "<string>"
  ]
}
'

{
  "data": {
    "dataset_id": "<string>",
    "version_id": "<string>",
    "num_created_examples": 123,
    "num_updated_examples": 123,
    "num_deleted_examples": 123
  }
}