curl -X POST "https://base.sepolia.api.4mica.xyz/auth/nonce" \
  -H "Content-Type: application/json" \
  -d '{"address":"0x1111111111111111111111111111111111111111"}'

const response = await fetch("https://base.sepolia.api.4mica.xyz/auth/nonce", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ address: "0x1111111111111111111111111111111111111111" }),
});
console.log(await response.json());

import axios from "axios";
const { data } = await axios.post(
  "https://base.sepolia.api.4mica.xyz/auth/nonce",
  { address: "0x1111111111111111111111111111111111111111" },
);
console.log(data);

import requests
url = "https://base.sepolia.api.4mica.xyz/auth/nonce"
print(requests.post(url, json={"address": "0x1111111111111111111111111111111111111111"}).json())

package main
import ("bytes"; "fmt"; "io"; "net/http")
func main() {
  body := []byte(`{"address":"0x1111111111111111111111111111111111111111"}`)
  response, _ := http.Post("https://base.sepolia.api.4mica.xyz/auth/nonce", "application/json", bytes.NewReader(body))
  defer response.Body.Close()
  result, _ := io.ReadAll(response.Body)
  fmt.Println(string(result))
}

{
  "nonce": "9c1c0c7e",
  "siwe": {
    "domain": "4mica.io",
    "uri": "https://4mica.io",
    "chain_id": 84532,
    "statement": "Sign in to 4Mica",
    "expiration": "2026-06-22T11:00:00Z",
    "issued_at": "2026-06-22T10:00:00Z"
  }
}

{ "error": "Invalid wallet address" }