curl --location --request POST 'https://partner-api-stage.p100.io/v1/user/balances/extended' \
--header 'x-api-key: <api-key>' \
--header 'Content-Type: application/json' \
--data-raw '{
"externalUserId": "f47ac10b-58cc-4372-a567-0e02b2c3d479"
}'
{
"message": "User in the process of expanding, wait for webhook"
}