package main
import (
  "fmt"
  "strings"
  "net/http"
  "io"
)
func main() {
  url := "https://api.moralis-streams.com/streams/evm/%3AchainId/block/%3AblockNumber"
  payload := strings.NewReader("{\"tag\":\"string\",\"allAddresses\":false,\"includeNativeTxs\":false,\"includeContractLogs\":false,\"includeInternalTxs\":false,\"includeAllTxLogs\":false,\"filterPossibleSpamAddresses\":false,\"abi\":\"string\",\"advancedOptions\":\"string\"}")
  req, _ := http.NewRequest("POST", url, payload)
  req.Header.Add("Accept", "application/json")
  req.Header.Add("Content-Type", "application/json")
  req.Header.Add("X-API-Key", "YOUR_API_KEY")
  res, _ := http.DefaultClient.Do(req)
  defer res.Body.Close()
  body, _ := io.ReadAll(res.Body)
  fmt.Println(res)
  fmt.Println(string(body))
}