Estimate approved subscribe example:

curl --location --request POST '/platform/v1/webhook/subscribe' \
--header 'Authorization: "Bearer API_TOKEN"'\
--header 'Content-Type: application/json' \
--data-raw '{
"event": "estimate/approved",
"target_url": "URL"
}'

Estimate approved payload example:

{
  "entity_name": "estimate",
  "event_type": "approved",
  "data": {
    "business_id": "s5ek7tfgp068i2st",
    "conversation_id": "l5718cwza39px7vj",
    "estimate_id": "50ic6dbp2wkntppt",
    "estimate_number": 1,
    "amount": "16.8",
    "currency": "ILS",
    "state": "approved",
    "due_date": "2019-11-29",
    "client_id": "54gjvtadfbxiom7y",
    "created_at": "2019-10-29T09:48:11.000+02:00"
  }
}