Method eth_subscribe undefined ()
connect with WS protocol

Parameters

type - string

A subscription type, such as newHeads (new headers appended to the chain, including chain reorganizations), logs (logs that are included in new imported blocks and match the given filter criteria) or newPendingTransactions (hashes for all transactions that are added to the pending state and are signed with a key that is available in the node).

objects - hex string

Optional argumants such as an address, multiple addresses, and topics.

Request

wscat -c wss://matic.getblock.io/YOUR-API-KEY/mainnet/ 
# wait for connection and send the request body 
{"jsonrpc": "2.0",
"method": "eth_subscribe",
"params": ["newHeads", null],
"id": "getblock.io"}

Response

{
    "id": 1,
    "jsonrpc": "2.0",
    "result": "0xe5af64ddfd365b4632988c5935cfedb7"
}