curl --request GET \
  --url https://api.thehaystack.ai/v2/haystack/items/{itemId}/resources/{resourceId} \
  --header 'Authorization: Bearer <token>'

{
  "resource": {
    "id": 123,
    "itemId": 123,
    "title": "<string>",
    "subTitle": "<string>",
    "description": "<string>",
    "resourceTypeId": 123,
    "displayOrder": 123,
    "contentType": "file",
    "fileMimeType": "<string>",
    "fileSizeBytes": 123,
    "externalPlatform": "youtube",
    "externalPlatformId": "<string>",
    "thumbnailImgUrl": "<string>",
    "url": "<string>",
    "resourceType": {
      "id": 123,
      "name": "<string>"
    },
    "linkTarget": "<string>"
  }
}