---
title: "SignalSubject"
description: "what a signal is about"
section: concepts
address: /concepts/signalsubject
contract: 0476e35e6e275db5
---

# SignalSubject

what a signal is about

[figure: SignalSubject is a value at none scope. The drawing shows its fields and the objects that they point at.]

| property | value |
|---|---|
| kind | value |
| scope | none |
| key | none |
| store | none |
| family | rules_engine |



## Fields


| field | type | required | note |
|---|---|---|---|
| `kind` | `one of an entity \| a market \| a channel \| a rival \| a tenant's own play` | yes |  |
| `id` | `id` | yes |  |



## Routes that use it
No route takes or returns SignalSubject directly. The record holds it, and the objects that point at it reach it.