post https://api.infstones.com/core/mainnet/
Creates a filter in the node, to notify when a new block arrives.
To check if the state has changed, call eth_getFilterChanges.
Parameters
None
Result
A hex code of an integer that represents the newly created filter ID.
Example
Request
curl <your-endpoint> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_newBlockFilter","params": [],"id":1}'Return
{
    "id": 1,
    "jsonrpc": "2.0",
    "result": "0x6f26cfeb39ab365443e530d9eb1df9da"
}