curl --location --request POST 'https://sms.crmeb.net/api/v2/signature/upload_file' \
--header 'Authorization: ' \
--form 'file_name=""' \
--form 'base64_content=""' \
--form 'file_md5=""'{
"status": 200,
"msg": "ok",
"data": {
"file_id": "yDtzAUUckpfjhcoaUuWikCqSv3fMmbNz",
"task_id": ""
}
}