2.1.7 - REST POST invoice comment - error

[manhao-chen]

using CE 2.1.7 demo data

trying to add comment via the REST API
POST : http://[domain]/magento-217/rest/V1/invoices/comments

BODY:
{
"parent_id": 3,
"is_customer_notified": 0,
"comment": "test comment 10456",
"is_visible_on_front": 0,
"entity_id": 3,
"invoice_id": 3,
"entity": "invoice"
}

get a response
{
"message": "Cannot save comment:\n%1",
"parameters": ["Parent Invoice Id is a required field\nComment is a required field"]
}

any ideas?

[manhao-chen]

never mind, realized it needed a entity wrapping

{
"entity": {
"is_customer_notified": 0,
"parent_id": 3,
"comment": "test comment : 10454",
"is_visible_on_front": 0,
"entity_id": 3
}
}