Audience targeting for reach forecast.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/services/reach_plan_service.proto)

| Fields ||
|---|---|
| ## `user_interest[]` | `https://developers.google.com/google-ads/api/reference/rpc/v26/UserInterestInfo` List of audiences based on user interests to be targeted. |
| ## `user_lists[]` | `https://developers.google.com/google-ads/api/reference/rpc/v26/UserListInfo` List of audiences based on user lists to be targeted. |