curl --location --request POST 'https://api.sandbox.velopayments.com//v3/sourceAccounts//transfers' \
--header 'Content-Type: application/json' \
--data-raw '{
"amount": 1,
"currency": "USD",
"toSourceAccountId": "53f220fd-ef8f-45ed-82da-b7b4ea965d58"
}'
{}