curl --request POST \
  --url https://api.example.com/v1/vault/withdraw \
  --header 'Content-Type: application/json' \
  --data '{
  "amount": 123
}'

{
  "user_id": "<string>",
  "amount": 123,
  "ok": true,
  "to_address": "<string>",
  "note": ""
}