curl --request POST \
--url https://api.bitski.com/v1/users/{user_id}/payment-methods \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
"paymentMethod": {
"testMode": true,
"token": "tok_1NoBfo2eZvKYlo2CIXAeVWy3"
}
}'