PushTopic.java

//Run this code in anonymous window of developer console
//Here my channel name is "AccountSpy" which will be used for subscription
PushTopic pushTopic = new PushTopic();
pushTopic.Name = 'AccountSpy';
pushTopic.Query = 'SELECT Id, Name, Type, Phone, Website FROM Account';
pushTopic.ApiVersion = 43.0;
pushTopic.NotifyForOperationCreate = true;
pushTopic.NotifyForOperationUpdate = true;
pushTopic.NotifyForOperationUndelete = true;
pushTopic.NotifyForOperationDelete = true;
pushTopic.NotifyForFields = 'Referenced';
insert pushTopic;