curl --request GET \
  --url https://api.rated.network/v0/polygon/validators/{validator_id}/effectiveness \
  --header 'Authorization: Bearer <token>'

{
  "page": {
    "from": 123,
    "to": 123,
    "granularity": "checkpoint",
    "size": 1
  },
  "total": 1,
  "data": [
    {
      "borProposalDuties": 10,
      "borProposals": 10,
      "borProposerEffectiveness": 100,
      "checkpointProposalDuties": 0,
      "checkpointProposalRewards": 0,
      "checkpointProposals": 0,
      "checkpointProposerEffectiveness": 0,
      "checkpointSignatureDuties": 0,
      "checkpointSignatureEffectiveness": 0,
      "checkpointSignatureRewards": 123.123,
      "checkpointSignatures": 0,
      "commissionRate": 0,
      "commissionRewards": 0,
      "delegatedStake": 920,
      "delegatorCount": 10,
      "delegatorRewards": 20,
      "distributedRewards": 20,
      "effectiveness": 100,
      "fromCheckpoint": 53105,
      "fromDate": "2021-09-01",
      "granularity": "checkpoint",
      "mevRewards": 0,
      "missedCheckpointProposalRewards": 0,
      "missedCheckpointSignatureRewards": 0,
      "missedCommissionRewards": 0,
      "missedDelegatorRewards": 0,
      "missedDistributedRewards": 0,
      "missedSelfSigningRewards": 0,
      "priorityFees": 0,
      "selfSigningRewards": 103.123,
      "selfStake": 80,
      "toCheckpoint": 53105,
      "toDate": "2021-09-01",
      "totalStake": 1000,
      "validatorId": 103
    }
  ],
  "next": "<string>"
}