curl --request POST \
  --url https://finceptbackend.share.zrok.io/quantlib/ml/features/lags \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "data": [
    100,
    102,
    101,
    105,
    107,
    106,
    110
  ],
  "n_lags": 3,
  "include_leads": false,
  "include_returns": true,
  "include_log_returns": false
}
'

{
  "success": true,
  "data": {
    "lags": [
      [
        102,
        100
      ],
      [
        101,
        102
      ],
      [
        105,
        101
      ]
    ],
    "leads": "<array>",
    "returns": [
      0.02,
      -0.0098,
      0.0396,
      0.019,
      -0.0093,
      0.0377
    ],
    "log_returns": "<array>"
  }
}