Start by setting up a new webhook. Select the action that will trigger the webhook.

Set the URL for the webhook to be local/note.

Now set the body to match the structure of wi_notes:
{
"reference_type": "customer",
"reference_no": ,
"note_type": "General Note",
"note_details": "Member is looking to have {@field_1_2@} guests join them for {@field_2_3@} on {@field_3_4@}.",
"assign_type": "customer",
"assign_no":
}
Where {@field_1_2@} refers to the question field ID.