Is there any way to get hidden data in google drive backups here?

[irainbw]

As the title says, I want to get the data backed up to google drive through the andriod phone, I saw that the signature of the corresponding app is required in the code, so I found the signature of the contact app package (com.android.providers.telephony) and Try to get it, but I don't know the request path of the api, like whatsapp in the source code is client/wa/backups, is there any way to get the data of the Android backup package in google drive