curl --location 'https://api.even3.com/api/v2/checkin/sessions' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
"sessions": [
{
"session_id": 999999,
"attendee_id": 999999,
"is_checked_in": true
}
]
}'{
"message": "Data entered successfully."
}