curl --request POST \
  --url https://app.flowglad.com/api/v1/webhooks \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
  "webhook": {
    "filterTypes": [
      "customer.created"
    ],
    "url": "<string>",
    "name": "<string>",
    "active": true
  }
}'

{
  "webhook": {
    "id": "<string>",
    "createdAt": 0,
    "updatedAt": 0,
    "livemode": true,
    "filterTypes": [
      "customer.created"
    ],
    "organizationId": "<string>",
    "url": "<string>",
    "name": "<string>",
    "active": true
  },
  "secret": "<string>"
}