curl --request GET \
  --url https://nexus.gerowallet.io/api/pools/{poolId}/history \
  --header 'Authorization: Bearer <token>'

{
  "margin": 123,
  "epoch_no": 123,
  "active_stake": 123,
  "active_stake_pct": 123,
  "saturation_pct": 123,
  "block_cnt": 123,
  "delegator_cnt": 123,
  "fixed_cost": 123,
  "pool_fees": 123,
  "deleg_rewards": 123,
  "epoch_ros": 123
}