curl --request POST \
  --url https://api.lpagent.io/open-api/v1/position/landing-decrease-tx \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "lastValidBlockHeight": 123,
  "closeTxsWithJito": [
    "<string>"
  ],
  "closeTxs": [],
  "swapTxs": [],
  "swapTxsWithJito": []
}
'

{
  "status": "success",
  "data": {
    "method": "JITO",
    "signature": "<string>"
  }
}