Zoom chat files downloads some erroneous ddata

[Numan]

We have integrated zoom with our application.
We used to download recorded sessions and chat file using zoom client and it was working fine
but for some days the downloaded chat files contains some json data in the file.

Can you please guide what gets changed and how this can be rectified.

Text from a sample file is attached here for your consideration:

{"index":"-1","service":"CMR","UUID":"51BD3D1D-5E6C-47BF-B599-536FD96DCF80","ver":"1.0"}
{"index":"0","extended_type":"000001000000","msg_id":"MS17NDUzMzEyNzMtMUUwNi00MUM3LUIwRjEtRjcyODIxQjY0NTM5fQ==","time_from_meeting_start":"00:00:32","time_from_recording_start":"00:00:31","chat_from":"0","s_name":"TnVtYW4gSGFpZGVy","content":"aGVsbG8=","xmpp_data":"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"}
{"index":"1","extended_type":"000001000000","msg_id":"MS17ODMzNEI5NDctMTJDMi00NjM2LUJDMEMtOUYzQzM1NzQ4QTJEfQ==","time_from_meeting_start":"00:00:35","time_from_recording_start":"00:00:34","chat_from":"0","s_name":"TnVtYW4gSGFpZGVy","content":"dGVzdCBtZXNzYWdl","xmpp_data":"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"}