Enumerates loyalty membership.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/enums/loyalty_membership.proto)

| Enums ||
|---|---|
| ## `NONMEMBER` | The user is not a member of the loyalty program. |
| ## `TIER1` | The user is a tier 1 member of the loyalty program. |
| ## `TIER2` | The user is a tier 2 member of the loyalty program. |
| ## `TIER3` | The user is a tier 3 member of the loyalty program. |
| ## `TIER4` | The user is a tier 4 member of the loyalty program. |
| ## `TIER5` | The user is a tier 5 member of the loyalty program. |
| ## `TIER6` | The user is a tier 6 member of the loyalty program. |
| ## `TIER7` | The user is a tier 7 member of the loyalty program. |
| ## `UNKNOWN` | Unknown. |
| ## `UNSPECIFIED` | Not specified. |