Create transfer

curl --request POST \
  --url https://serviceapi.sarafa.ss/v3/transfer \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "currency": "USD",
  "amount": 10,
  "destination": "mobile",
  "account_number": "+254700000000",
  "external_reference": "trf-001",
  "callback_url": "https://merchant.example/webhooks"
}
'

{
  "status": "success",
  "data": {
    "quote": {
      "amount": 123,
      "rate": 123,
      "fee": 123,
      "platform_fee": 123,
      "receive_amount": 123,
      "quoted_at": "2023-11-07T05:31:56Z",
      "deposit_amount": 123
    }
  }
}