File object fields
Audio files are represented as JSON objects which have the following keys:
| Field | Type | Description |
|---|---|---|
| file_id | string | Unique file id It is unique only within a scope of this call instance. |
| start_time | datetime | Date/time when audio recording for this particular file has been started. Format is ISO8601 with timezone, for example, |
| stop_time | datetime | Date/time when audio recording for this particular file has been stopped |
| file_size | integer | Size of audio file in bytes |
| file_path | string | Location of audio file on disk. |
| watermark | string | SHA1 hash of audio file content. It is used to validate data integrity |
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