<form method="post" action="" accept-charset="UTF-8">
{{ getCsrfInput() }}
<input type="hidden" name="action" value="guestEntries/saveEntry">
<input type="hidden" name="redirect" value="success">
<input type="hidden" name="profile" value="3">

<label for="title">Title</label>
<input id="title" type="text" name="title">

<label for="body">Body</label>
<textarea id="body" name="fields[body]"></textarea>

<input type="submit" value="Publish">
</form>