curl --request POST \
  --url https://developer.worldcoin.org/api/v2/minikit/send-notification \
  --header 'Content-Type: application/json' \
  --data '{
  "app_id": "app_id",
  "wallet_addresses": [
    "0x123",
    "0x456"
  ],
  "title": "title",
  "message": "Hello ${username}, your transaction is complete!",
  "mini_app_path": "mini_app_path"
}'

{
  "success": true,
  "status": 123,
  "result": [
    {
      "walletAddress": "<string>",
      "sent": true,
      "reason": "<string>"
    }
  ]
}