如何使用数组作为标题和AFNetworking进行POST

This is the header:

这是标题：

                "url": "{{host}}/images/bla",
            "method": "POST",
            "header": [
                {
                    "key": "Content-Type",
                    "value": "application/json",
                    "description": ""
                },
                {
                    "key": "Authorization",
                    "value": "Bearer token",
                    "description": ""
                }
            ],
            "body": { ... }
                "