curl --request POST \
--url https://mainnet.helius-rpc.com/ \
--header 'Content-Type: application/json' \
--data '{
"jsonrpc": "2.0",
"id": "1",
"method": "getFeeForMessage",
"params": [
"AQABAgIAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEBAQAA"
]
}'