This is an example call for eth_getFilterChanges.
{
"jsonrpc": "2.0",
"id": "1",
"method": "eth_getFilterChanges",
"params": [
""
]
}
{
"jsonrpc": "2.0",
"id": "1",
"error": {
"code": -32000,
"message": "filter not found"
}
}