Ledger Requests API

A Request represents the intent of creating or changing an object in the system.For example, when you create a transaction, a *Create transaction* request is created.You can observe all the changes in the system via `GET /requests`.Every request has a `target_type` and `target_id` that you can use to fetchthe object targeted by this request.For example, you can list all requests waiting for approval:```GET /requests?status=PENDING_APPROVAL{ "edges": [ { "cursor": 0, "node": { "created_by": 5, "created_on": "2020-09-25T13:52:38.377654+00:00", "expires_at": "2020-10-02T13:52:38.377605+00:00", "id": 20, "status": "PENDING_APPROVAL", "target_id": 13, "target_type": "USER", "type": "REVOKE_USER" } }, { "cursor": 1, "node": { "created_by": 11, "created_on": "2020-09-25T13:52:53.421567+00:00", "expires_at": "2020-10-02T13:52:53.421502+00:00", "id": 21, "status": "PENDING_APPROVAL", "target_id": 3681, "target_type": "TRANSACTION", "type": "CREATE_TRANSACTION" } } ], "page_info": { "count": 2, "has_next_page": false }}```Here we have 2 requests waiting for approval. You can have more info onthose 2 objects via```GET /users/13GET /transactions/3681```