All input for the castStart mutation.
| Field | Type | Description |
|---|
| clientMutationId | String | An arbitrary string value with no semantic meaning. Will be included in the payload verbatim. May be used to track mutations by the client. |
| screenIds | [UUID] | |
| spaceId | UUID | |
| content | JSON | |
| priority | Int | |
| expiresAt | Datetime | |