The platform manages recipients for campaigns by grouping them. Each group can contain one or more recipients. Groups generally follow this structure:
{
"id": int64,
"user_id": int64,
"name": string,
"modified_date": string(datetime),
"targets": {}Target,
"customer": {}Customer,
"customerId": int64,
"external_id": string,
"filters": {}Filter,
"nbTargets": int64
}