curl --request POST \
  --url https://devnet.helius-rpc.com/getCompressedBalanceByOwner \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": "test-account",
  "jsonrpc": "2.0",
  "method": "getCompressedBalanceByOwner",
  "params": {
    "owner": "111111131h1vYVSYuKP6AhS86fbRdMw9XHiZAvAaj"
  }
}
'

{
  "id": "test-account",
  "jsonrpc": "2.0",
  "error": {
    "code": 123,
    "message": "<string>"
  },
  "result": {
    "context": {
      "slot": 100
    },
    "value": 100
  }
}