curl --request GET \
  --url https://prv.stake.biya.io/stake/buyback/statistics/participation

{
  "total_participations": 123,
  "total_participants": 123,
  "total_collected": "<string>",
  "average_amount": "<string>",
  "recent_participations": [
    {
      "id": "<string>",
      "participation_id": "<string>",
      "round_id": "<string>",
      "user_address": "<string>",
      "booked_amount": "<string>",
      "actual_amount": "<string>",
      "claimed_revenue": "<string>",
      "status": 123,
      "submit_tx_hash": "<string>",
      "claim_tx_hash": "<string>",
      "created_at": "<string>",
      "updated_at": "<string>"
    }
  ]
}