Get all audiences

curl --request GET \
  --url https://atoms-api.smallest.ai/api/v1/audience \
  --header 'Authorization: Bearer <token>'

{
  "status": true,
  "data": [
    {
      "_id": "60d0fe4f5311236168a109ca",
      "name": "My Customer List",
      "description": "List of customers for marketing campaign",
      "phoneNumberColumnName": "phoneNumber",
      "organization": "60d0fe4f5311236168a109cb",
      "createdBy": "60d0fe4f5311236168a109cc",
      "createdAt": "2025-01-15T10:30:00.000Z",
      "updatedAt": "2025-01-15T10:30:00.000Z"
    }
  ]
}