curl -sS https://api.ledger.so/v1/customers \
-H "Authorization: Bearer $LEDGER_API_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: demo-create-customer-1" \
-d '{
"email": "[email protected]",
"firstName": "Dev",
"lastName": "Example",
"type": "individual"
}'