X-User-Token: ********************curl --location --request PUT 'https://api.flashcat.cloud/api/n9e/self/password' \
--header 'X-User-Token: <api-key>' \
--header 'Content-Type: application/json' \
--data '{
"oldpass": "string",
"newpass": "string"
}'{
"err": "string"
}