Get contest

curl --request GET \
  --url https://backend.swap.coffee/v1/contests/{id}

{
  "id": 123,
  "info": {
    "title": "<string>",
    "description": "<string>",
    "references": [
      {
        "ref_name": "<string>",
        "ref_url": "<string>"
      }
    ],
    "conditions": [
      {
        "type": "unique",
        "args": [
          "<string>"
        ]
      }
    ],
    "rewards": [
      {
        "reward": "<string>",
        "place": 123,
        "place_from": 123,
        "place_to": 123
      }
    ],
    "start_time_unix": 123,
    "end_time_unix": 123,
    "image_url": "<string>",
    "total_reward": "<string>",
    "hidden": true
  }
}