curl --request POST \
  --url https://api.getsly.ai/v1/v1/ucp/settle \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "token": "<string>",
  "idempotency_key": "<string>"
}
'

{
  "data": {
    "id": "<string>",
    "token_id": "<string>",
    "amount": 123,
    "created_at": "2023-11-07T05:31:56Z",
    "tx_hash": "<string>",
    "rail_reference": "<string>",
    "completed_at": "2023-11-07T05:31:56Z"
  }
}