How to handle deserializing modified event params?

[inmanturbo]

Say you have an event that takes in a DTO which uses pascal case field names:

// api/v1
{
    "BusName" : "Kenetic Energies, LLC",
    "BusBranch" : "Northeastern America",
    "BusDirectory" : "1cba7e46-1356-44ce-b026-b46628ea6a23"
}

class BusinessData extends DataTransferObject
{
    public string $BusName;
    public string $BusBranch;
    public string $BusDirectory;
}

class AccountCreated extends ShouldBeStored
{
    public AccountData $accountData;
    public string $accountUuid;

    public function __construct(
        string $accountUuid,
        AccountData $accountData,
    ) {
        $this->accountData = $accountData;
        $this->accountUuid = $accountUuid;
    }
}

But over time you know you will need to migrate to the next version of the api:

// api/v2
{
    "name" : "Kenetic Energies, LLC",
    "branch" : "Northeastern America",
    "directory_id" : "1cba7e46-1356-44ce-b026-b46628ea6a23"
}

How would you best handle this, and still be able to replay all the events? and how will the package know how to properly deserialize the event?

Should I forever use the original Event and DTO and write maps to transform the data? This is not ideal because obviously the ultimate goal is to get way from the legacy conventions and into an improved application design.