AI-generated Key Takeaways
- 
          A LookalikeUserlist is a list of users similar to a user-defined seed group. 
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          LookalikeUserlists are defined by seed user list IDs, expansion level, and targeted countries. 
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          The seed_user_list_idsfield indicates the source user lists for the lookalike audience.
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          The expansion_levelfield determines the size of the lookalike audience.
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          The country_codesfield specifies the countries targeted by the Lookalike list using ISO-3166 codes.
LookalikeUserlist, composed of users similar to those of a configurable seed (set of UserLists)
| Fields | |
|---|---|
| 
 | 
 Seed UserList ID from which this list is derived, provided by user. | 
| 
 | Expansion level, reflecting the size of the lookalike audience | 
| 
 | 
 Countries targeted by the Lookalike. Two-letter country code as defined by ISO-3166 |