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| Action | Intended User | URI | Method | Request Params | Request Body | Response Body | |
|---|---|---|---|---|---|---|---|
| 1 | subscribe to a topic | Synapse users who has READ permission on the object | /subscription | POST | Topic | Subscription | |
| 2 | retrieve subscriptions for a list of topics | Synapse users | /subscription/list | POST | objectType | List<ObjectId>SubscriptionRequest | SubscriptionPage |
| 3 | unsubscribe to a topic | Synapse users who subscribed to the object | /subscription/{subscriptionId} | DELETE | |||
| 4 | retrieve all subscriptions for a user | Synapse users | /subscription/all | GET | limit, offset, objectType (optional) | SubscriptionPage |
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