curl --request GET \
  --url https://test.deribit.com/api/v2/private/cancel_withdrawal \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "id": 7420,
  "method": "private/cancel_withdrawal",
  "params": {
    "currency": "BTC",
    "id": 1
  }
}
'

{
  "jsonrpc": "2.0",
  "id": 7420,
  "result": {
    "address": "2NBqqD5GRJ8wHy1PYyCXTe9ke5226FhavBz",
    "amount": 0.5,
    "confirmed_timestamp": null,
    "created_timestamp": 1550571443070,
    "currency": "BTC",
    "fee": 0.0001,
    "id": 1,
    "priority": 0.15,
    "state": "cancelled",
    "transaction_id": null,
    "updated_timestamp": 1550571443070
  }
}