curl -v https://api.xsolla.com/merchant/v2/merchants/{merchant_id}/token \
 -X POST \
 -u your_merchant_id:merchant_api_key \
 -H 'Content-Type:application/json' \
 -H 'Accept: application/json' \
 -d '
 {
     "user": {
         "id": {
             "value": "1234567"
         },
     },
     "settings": {
         "project_id": 14004,
         "payment_method": 24
     },
     "purchase": {
             "checkout": {
                 "amount": 9.99,
                 "currency": "USD"
             }
     }
 }'