Create a Signals on-call shift in a schedule.
| Field | Type | Required | Description |
|---|---|---|---|
StartTime |
string | ✔️ | The start time of the shift in ISO8601 format. |
EndTime |
string | ✔️ | The end time of the shift in ISO8601 format. |
UserID |
*string | ➖ | The ID of the user who is on-call for the shift. If not provided, the shift will be unassigned. |