curl --location --request POST 'https://apicfa.convirza.com/v2/campaign/user' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data-raw '[
{
"campaign_id": 0,
"campaign_users": [
1
]
}
]'[
{
"result": "string",
"data": "string",
"entry_count": 0
}
]