Starts a subscription (on WebSockets / IPC / TCP transports) to a particular event. For every event that matches the subscription a JSON-RPC notification with event details and subscription ID will be sent to a client.
eth_subscribe:params[0]: Subscription type. Must be either “newHeads” or “logs”.params[1]: Filter options for “logs” subscription, or empty object for “newHeads”.“0xb53c4832f1dca4a5”.