Decryption of attachments

Hello. Thank you very much for your product. At the moment I want to improve the python-vaultwarden library so that it can download and decrypt attachments. Please tell me how exactly to do this. For example, I requested a cipher, in the attachments section there will be the following text:
```
[
{
“fileName”: “2.vNP1bKUeOBe8gw/A5+MGLw==|7eFfmBDKit/Ndnzz5hw/ng==|IHIL6Jfp/qu9jyw4kuYWgx05TqxYxrLIKACF61qcMxI=”,
“id”: “920c28f66c5eb2e05ebd”,
“key”: “2.37mojHtNacQLny4+qjvBwA==|txBTJgNwpl1iSK6Z2VywYYn5G/ay/dquzjdyUHdmlngAsy+KQR3oTZi3c8PodBA BfINpaO+A6GuY6bLksKvNHuxML2cT0YsjGssD7bDGMKM=|WUVT4WBQN0kVVoc5yARKb8JyB1eIy7ltu8iPvYfbuuY=”,
“object”: “attachment”,
“size”: “785”,
“sizeName”: “785.00 bytes”,
“url”: “https: //x.ru/attachments/42b4eeb9-76b8-4e25-8743-952a213cbb16/920c28f66c5eb2e05ebd?token=eyJXXXXX”,
}
]
```

I downloaded the file by URL. What is the next step? You can also attach links to the code, I will try to figure it out. Thank you very much!

Code: clients/apps/cli/src/commands/get.command.ts at 22cf55a23f85f5ec3f50217c8e6325c605d7d1ac · bitwarden/clients · GitHub

Command:
```
bw get attachment
–itemid 42b4eeb9-76b8-4e25-8743-952a213cbb16
1ba3a8f42e79fcf51d77
–output ./photo.jpg
```