Send chat message request
| Name | Type | Description | Notes |
|---|---|---|---|
| Txid | int | Order ID | |
| Type | int | Message type: `0` text; `1` file (image or video); defaults to `0`. | [optional] |
| Message | string | Message content. When type=0, pass text up to 500 characters, which goes through off-platform traffic diversion risk control; when hit, the response contains risk_type=1 and toast_msg. When type=1, pass the file_key returned by upload_chat_file |