Struct: UtmParameters
| Key | Field | Type | Description | Requiredness | Default value |
| 1 | utmSource | string | Identifies which site sent the traffic
| optional | |
| 2 | utmMedium | string | Identifies what type of link was used, such as cost per click or email.
| optional | |
| 3 | utmCampaign | string | Identifies a specific product promotion or strategic campaign.
| optional | |
| 4 | utmTerm | string | Identifies search terms.
| optional | |
| 5 | utmContent | string | Identifies what specifically was clicked to bring the user to the site, such as a banner ad or a text link. It is often used for A/B testing and content-targeted ads.
| optional | |
* A set of UTM parameters
* https://en.wikipedia.org/wiki/UTM_parameters
*