SpellLossOfControlInfo

startTime

number (If cooldown is active, time started; 0 if no cooldown)

duration

number (Cooldown duration in seconds if active; 0 if cooldown is inactive)

modRate

number (Rate at which cooldown UI should update)

isActive

bool, never secret (False if cooldown is not active (startTime or duration are 0); True otherwise)

shouldReplaceNormalCooldown

bool, never secret (True if this cooldown should be displayed in-place of the normal action cooldown (ex: the LoC cooldown expires later than the normal cooldown); False otherwise)

Present since at least 1.60.1.70707, the first build we track.