Read clip suggestion progress and candidates

{  "$schema": "https://example.com/api/v1/schemas/ClipSuggestions.json",  "candidates": [    {      "context_warning": "string",      "end": 0.1,      "first_word": 0,      "id": "string",      "last_word": 0,      "rationale": "string",      "start": 0.1,      "title": "string"    }  ],  "error_message": "string",  "id": "string",  "revision": 0,  "source_id": "string",  "source_revision": "string",  "state": "queued",  "updated_at": "2019-08-24T14:15:22Z",  "workspace_id": "string"}