curl --request POST \
  --url https://{cluster}.voucherify.io/v1/loyalties/{campaignId}/earning-rules/{earningRuleId}/disable \
  --header 'Authorization: Bearer <token>' \
  --header 'X-App-Id: <api-key>' \
  --header 'X-App-Token: <api-key>'

{
  "id": "ern_A2RArBE30Tkt56utVLrRv7rZ",
  "created_at": "2022-11-25T07:31:05.866Z",
  "updated_at": "2022-11-25T14:12:57.167Z",
  "loyalty": {
    "points": 1,
    "type": "FIXED"
  },
  "event": "customer.loyalty.tier.downgraded",
  "loyalty_tier": {
    "id": "__ANY__"
  },
  "source": {
    "banner": "Tier Downgraded",
    "object_id": "camp_fkZ28pe7DUAEmmabofkxHI8N",
    "object_type": "campaign"
  },
  "active": false,
  "object": "earning_rule",
  "automation_id": "auto_TMVZtCNMBgZm0KcPJ7otiHZW",
  "metadata": {
    "Type": "Tier"
  }
}