API usage: How to change the 'participant_note' field in the Participant entry for an event

Question

I need to update the 'participant_note' field for a few Event Participants via the API. I can't figure out how to do this using the API explorer (it seems the explorer does not recognize 'participant_note' as a valid field).
Here is an example of a Participant get call

{
"contact_id": "11111",
"contact_type": "Individual",
"contact_sub_type": "",
"sort_name": "Last, First",
"display_name": "First Last",
"event_id": "1",
"event_title": "Readable Name",
"event_start_date": "2014-01-01 00:00:00",
"event_end_date": "2014-01-01 00:00:00",
"participant_id": "1",
"participant_fee_level": "",
"participant_fee_amount": "",
"participant_fee_currency": "",
"event_type": "Some Type",
"participant_status_id": "1",
"participant_status": "Registered",
"participant_role_id": "1",
"participant_role": "Attendee",
"participant_register_date": "2014-01-01 00:00:00",
"participant_source": "",
"participant_note": "",
"participant_is_pay_later": "0",
"participant_is_test": "0",
"participant_registered_by_id": "",
"participant_discount_name": "",
"participant_campaign_id": "",
"id": "1"
}

Answer 1

i figured it out:

entity=Participant
action=create
json={
"sequential":1,
"id":"", THIS IS PARTICIPANT ID
"participant_note":""
}

Answer 2

Look for it in civicrm_note (Entry Note in the API Explorer) It will be tied back to the Participant Table via civicrm_note.entity_table and civicrm_note.entity_id.