curl --request PUT \
  --url https://api.courier.com/notifications/{id}/{submissionId}/checks \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "checks": [
    {
      "id": "<string>",
      "status": "RESOLVED",
      "type": "custom"
    }
  ]
}'

{
  "checks": [
    {
      "id": "<string>",
      "status": "RESOLVED",
      "type": "custom",
      "updated": 123
    }
  ]
}