Error when reading Announcements with rewards in C#MS code

[allister-beamable]

Describe the bug

Reported by a customer: await Services.Announcements.GetCurrent(); in C#MS code throws a Newtonsoft.Json.JsonSerializationException saying Error converting value "Rewards" to type 'Beamable.Common.Content.OptionalString'. Path 'announcements[2].gift.description'

Similar code works fine in Unity client code, and players are able to claim rewards from Announcements, but things blow up when C#MS code tries to read Announcements with rewards.

To Reproduce
Steps to reproduce the behavior:

1. Create an Announcement with rewards on it somehow (could be Content, could be a Messaging Campaign)
2. Write a ClientCallable that uses Services.Announcements.GetCurrent();
3. Invoke the ClientCallable

Expected behavior

Announcements.GetCurrent() returns a list of announcement data objects, some of which contain reward descriptions.

Actual behavior

An exception is thrown from somewhere inside GetCurrent()

Metadata

• SDK version: Beamable Unity SDK 1.19.17

[cdhanna]

btw- you can also create an announcement via content.

[cdhanna]

does sending any DTO with an OptionalString work?

[cdhanna]

the hint is to look at UnitySerializationSettings