getInflationReward

curl --request POST \
  --url https://mainnet.helius-rpc.com/ \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "getInflationReward",
  "params": [
    [
      "6dmNQ5jwLeLk5REvio1JcMshcbvkYMwy26sJ8pbkvStu"
    ]
  ]
}'

{
  "jsonrpc": "2.0",
  "id": "1",
  "result": [
    {
      "epoch": 2,
      "effectiveSlot": 224,
      "amount": 2500,
      "postBalance": 499999442500,
      "commission": 5
    }
  ]
}