AI-generated Key Takeaways
- 
          This operation allows for creating, updating, or removing a custom audience. 
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          The update_maskfield is used to specify which fields are modified during an update operation.
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          The operationfield, which can becreate,update, orremove, determines the type of action performed on the custom audience.
A single operation (create, update) on a custom audience.
| Fields | |
|---|---|
| 
 | FieldMask that determines which resource fields are modified in an update. | 
| Union field 
 | |
| 
 | Create operation: No resource name is expected for the new custom audience. | 
| 
 | Update operation: The custom audience is expected to have a valid resource name. | 
| 
 | 
 Remove operation: A resource name for the removed custom audience is expected, in this format: 
 |