curl --request PUT \
  --url https://api-alpha.fourvenues.com/integrations/lists/{listId}/checkin \
  --header 'Content-Type: application/json' \
  --header 'integration_id: <api-key>' \
  --header 'secret: <api-key>' \
  --header 'x-api-key: <api-key>' \
  --data '[
  {
    "_id": "1712861139741",
    "women": 1,
    "men": 1,
    "no_gender": 0,
    "price": 10
  }
]'

{
  "success": true,
  "data": {
    "_id": "Pl4gr84v20xqu01js0ybj42s6vYtIz1T",
    "channel_id": "ajifs2hke000dwemmurwd3kuqN3Kopcx",
    "code": "P6J21FF2S",
    "enter": 4,
    "event_id": "Mjo4f9o9h01fdjvmmrgn9aoh4s5IBHzX",
    "for": 7,
    "name": "Miguel Román",
    "observations_reception": "Birthday",
    "rate_id": "Tl4gr63fr0xkr01i1gk354qbrSCMLTwl",
    "rate_name": "General Access",
    "rate_slug": "general-access",
    "referral_id": "ñeifupjvx000rwe2m2zuba1z9FqyR2dSL",
    "referral": {
      "_id": "eifupjvx000rwe2m2zuba1z9FqyR2dSL",
      "name": "John Appleseed"
    },
    "options": [
      {
        "_id": "1712861139741",
        "women": 1,
        "men": 1,
        "no_gender": 0,
        "price": 10,
        "total": 2
      }
    ],
    "tags": [
      "birthday",
      "free-access"
    ],
    "removed_at": 0
  }
}