[
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        "timestamp": "2023-09-11 12:29:16.909540",
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        "balance": "1000"
    },
    {
        "index": 2,
        "timestamp": "2023-09-11 12:39:10.330922",
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        "balance": "900"
    },
    {
        "index": 3,
        "timestamp": "2023-09-11 12:49:07.150163",
        "sender": "b",
        "recipient": "a",
        "amount": "75",
        "balance": "825"
    }
]