MP3 add a new item

**Brief description:**

- Add a new mp3 file.

**Endpoint：**

- `https://www.mywebsite.com/api/v6.0/mp3/add`
  
**Method:**

- POST / GET

**Parameter:**

|Parameter name|Required|Type|Explain|
|:----    |:---|:----- |-----   |
|api_key_token |Yes  |string |Your API key   |
|desc |Yes | string | Description | 
|mymusic| Yes | checkbox | `1` if user agrees to terms of uplaoding file empty if not checked |
|file| Yes| file| MP3 file|
|offset| no | integer | - |

**Example Response **
```
{
    "merchant": "Premium Social Network",
    "url": "http:\/\/local.openteknik.com\/",
    "time_token": 1632341638,
    "payload": {
        "mp3": {
            "data": {},
            "guid": 128,
            "time_created": 1632341637,
            "owner_guid": 1,
            "description": "Desc",
            "title": "07.mp3",
            "type": "user",
            "subtype": "mp3file",
            "container_type": "user",
            "container_guid": "1",
            "file:mp3file": "file URL"
        }
    },
    "code": "100",
    "message": "Request successfully executed"
}
```