pub fn ser_subscribe_to_event_input_input(
object: &mut ::aws_smithy_json::serialize::JsonObjectWriter,
input: &crate::operation::subscribe_to_event::SubscribeToEventInput,
) -> ::std::result::Result<(), ::aws_smithy_types::error::operation::SerializationError> {
if let Some(var_1) = &input.resource_arn {
object.key("resourceArn").string(var_1.as_str());
}
if let Some(var_2) = &input.event {
object.key("event").string(var_2.as_str());
}
if let Some(var_3) = &input.topic_arn {
object.key("topicArn").string(var_3.as_str());
}
Ok(())
}