fgo-game-data/master/mstWarBoardStageBoss.json

[{
    "script": {},
    "stageId": 94087009,
    "idx": 1,
    "iconId": 80439,
    "defeatEffectId": 80439,
    "bossColor": "0xb42fa4"
}, {
    "script": {},
    "stageId": 94087059,
    "idx": 1,
    "iconId": 80439,
    "defeatEffectId": 80439,
    "bossColor": "0xb42fa4"
}]