def METHOD_NAME() -> MessageDb:
    message_dict: Mapping[str, Any] = {
        "chain": "ETH",
        "item_hash": "b3d17833bcefb7a6eb2d9fa7c77cca3eed3a3fa901a904d35c529a71be25fc6d",
        "sender": "0xdeadbeef",
        "type": "STORE",
        "channel": "PINNING",
        "item_content": '{"address":"0x2278d6A697B2Be8aE4Ddf090f918d1642Ee43c8C","item_type":"ipfs","item_hash":"QmPZrod87ceK4yVvXQzRexDcuDgmLxBiNJ1ajLjLoMx9sU","time":1644409598.782}',
        "item_type": "inline",
        "signature": "0x755cce871af0ba577a940c2515f361b52726fb9c9c5a4c4a8323b9e773ca3008527f4ca7a73e3ea12c7df05b22b3e5c4fb27cfc9220b0cfcf2620c0f4d22c51d1c",
        "time": 1644409598.782,
    }
    return make_validated_message_from_dict(
        message_dict, raw_content=message_dict["item_content"]
    )