toJson method
Convert the ExchangeCreateContract object to a JSON representation.
Implementation
@override
Map<String, dynamic> toJson() {
return {
'owner_address': ownerAddress.toString(),
'first_token_id': StringUtils.tryDecode(firstTokenId),
'first_token_balance': firstTokenBalance?.toString(),
'second_token_id': StringUtils.tryDecode(secondTokenId),
'second_token_balance': secondTokenBalance?.toString(),
}..removeWhere((key, value) => value == null);
}