{
"objectId": "string"
}curl --location '/oss_symbol_sz/api/bim/obs/file/initiateMultipartUpload' \
--header 'Content-Type: application/json' \
--data '{
"objectId": "string"
}'{
"code": 0,
"errmsg": "成功",
"data": "0000018A69BED4AB8102ACB6C74FBCCD"
}