curl --request POST \
  --url https://api.gleap.io/v3/helpcenter/collections/{helpcenterCollectionId}/articles \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'project: <project>' \
  --data '
{
  "title": "<unknown>",
  "description": "<unknown>",
  "content": "<unknown>",
  "plainContent": "<unknown>",
  "helpcenterCollection": "<string>",
  "author": "<string>",
  "project": "<string>",
  "isDraft": true,
  "docId": 123,
  "lexorank": "<string>",
  "upvotes": "<unknown>",
  "targetAudience": "all",
  "externalId": "<string>",
  "baseAudienceFilter": "<unknown>",
  "extendedAudienceFilter": "<unknown>",
  "tags": [
    "<string>"
  ],
  "newCollectionId": "<string>"
}
'

{
  "updatedAt": "<string>",
  "createdAt": "<string>",
  "sourceUsage": 123,
  "isDraft": true,
  "tags": [
    "<string>"
  ],
  "targetAudience": "<string>",
  "extendedAudienceFilter": "<unknown>",
  "baseAudienceFilter": "<unknown>",
  "externalId": "<string>",
  "docId": 123,
  "author": {
    "isValid": {},
    "createFromHexString": {},
    "createFromTime": {},
    "generate": {},
    "cacheHexString": "<unknown>"
  },
  "helpcenterCollection": {
    "isValid": {},
    "createFromHexString": {},
    "createFromTime": {},
    "generate": {},
    "cacheHexString": "<unknown>"
  },
  "upvotes": "<unknown>",
  "plainContent": "<unknown>",
  "lexorank": "<string>",
  "project": {
    "isValid": {},
    "createFromHexString": {},
    "createFromTime": {},
    "generate": {},
    "cacheHexString": "<unknown>"
  },
  "content": "<unknown>",
  "title": "<unknown>",
  "description": "<unknown>"
}