curl --request PATCH \
  --url http://localhost:8081/v1/connections/{id}/labels \
  --header 'Content-Type: application/json' \
  --header 'X-Org-Id: <x-org-id>' \
  --header 'X-Reevit-Key: <api-key>' \
  --data '
{
  "labels": [
    "<string>"
  ]
}
'

{
  "id": "<string>",
  "provider": "<string>",
  "mode": "<string>",
  "status": "<string>",
  "capabilities": {},
  "routing_hints": {
    "country_preference": [
      "<string>"
    ],
    "method_bias": {},
    "fallback_only": true
  },
  "labels": [
    "<string>"
  ],
  "fee_structure": {
    "percentage": 123,
    "fixed": 123,
    "per_method": {},
    "per_currency": {}
  },
  "total_calls": 123,
  "successful_calls": 123,
  "failed_calls": 123,
  "total_latency_ms": 123,
  "last_success_at": "2023-11-07T05:31:56Z",
  "last_failure_at": "2023-11-07T05:31:56Z",
  "health_score": 123,
  "health_status": "<string>",
  "last_validated_at": "2023-11-07T05:31:56Z",
  "last_validation_status": "<string>",
  "last_validation_error": "<string>",
  "validation_failures": 123,
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z"
}