curl --request POST \
  --url https://beaconcha.in/api/v2/ethereum/validators/performance-aggregate \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "validator": {
    "validator_identifiers": [
      1
    ]
  },
  "range": {},
  "chain": "mainnet"
}
'

{
  "data": {
    "beaconscore": {
      "total": 0.5,
      "attestation": 0.5,
      "proposal": 0.5,
      "sync_committee": 0.5
    },
    "duties": {
      "attestation": {
        "included": 123,
        "assigned": 123,
        "correct_head": 123,
        "correct_source": 123,
        "correct_target": 123,
        "valuable_correct_head": 123,
        "valuable_correct_source": 123,
        "valuable_correct_target": 123,
        "avg_inclusion_delay": 1.2,
        "avg_inclusion_delay_excluding_missed_slots": 1.2,
        "missed": 123
      },
      "sync_committee": {
        "successful": 1,
        "assigned": 1,
        "missed": 1,
        "missed_including_missed_slots": 1,
        "scheduled": 1
      },
      "proposal": {
        "successful": 123,
        "assigned": 123,
        "missed": 123,
        "included_slashings": 123
      }
    }
  },
  "range": {
    "slot": {
      "start": 1,
      "end": 1
    },
    "epoch": {
      "start": 1,
      "end": 1
    },
    "timestamp": {
      "start": 1,
      "end": 1
    }
  }
}