curl --location 'https://api.even3.com/api/v2/checkin/attendees' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
"attendees": [
{
"checkin_code": {checkin_code},
"checkin": true
}
]
}'{
"success": true,
"message": "string",
"detail": "string",
"help": "string",
"code": "string"
}