curl --location --request GET '/v2/files/storage-usage' \
--header 'app-key: {{app_sub_key}}'{
"code": 10000,
"message": "success",
"data": {
"used_size": 7045961913,
"max_size": 5221225472,
"file_count": 30,
"usage_percentage": 134.95
}
}