curl --request POST \
  --url https://api.getredo.com/v2.2/stores/{storeId}/customer-subscriptions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "sms": {
    "phoneNumber": "+15550000000",
    "subscriptions": {
      "marketing": {
        "subscriptionStatus": "subscribed",
        "triggerAutomations": true,
        "updatedAt": "2026-01-15T10:30:00Z"
      },
      "transactional": {
        "subscriptionStatus": "subscribed",
        "updatedAt": "2026-01-15T10:30:00Z"
      }
    }
  },
  "email": {
    "email": "jane.doe@example.com",
    "subscriptions": {
      "marketing": {
        "subscriptionStatus": "subscribed",
        "triggerAutomations": true,
        "updatedAt": "2026-01-15T10:30:00Z"
      }
    }
  }
}
'

{
  "success": true,
  "message": "Customer subscriptions updated successfully",
  "updatedSubscriptions": {
    "sms": {
      "marketing": true,
      "transactional": true
    },
    "email": {
      "marketing": true
    }
  }
}