Authorization: Bearer <JWT> (obtain via Partner login, refresh via Refresh token).curl --location 'https://api.veloconnect.me/api/v2/segments//contacts/add' \
--header 'Content-Type: application/json' \
--data '{
"contactIds": [
0
],
"addAllContacts": true,
"removeAllContacts": true
}'{
"data": [
[
0
]
]
}