Объединить два диктатора в отдельный список по идентификатору

I'm trying to merge the object based on key specs, most of the keys structure is consistent, taking into consideration the merge will only happen if company_name is the same (in this example, I only have one company_name) and if only (name, {color, type, license, description) are equal across multiple lists.

[
{
    "company_name": "GreekNLC",
    "metadata": [
        {
            "name": "Bob",
            "details": [
                {
                    "color": "black",
                    "type": "bmw",
                    "license": "4DFLK",
                    "specs": [
                        {
                            "properties": [
                                {
                                    "info": [
                                        "sedan",
                                        "germany"
                                    ]
                                },
                                {
                                    "info": [
                                        "drive",
                                        "expensive"
                                    ]
                                }
                            ]
                        }
                    ],
                    "description": "amazing car"
                }
            ]
        },
        {
            "name": "Bob",
            "car_details": [
                {
                    "color": "black",
                    "type": "bmw",
                    "license": "4DFLK",
                    "specs": [
                        {
                            "properties": [
                                {
                                    "info": [
                                        "powerful",
                                        "convertable"
                                    ]
                                },
                                {
                                    "info": [
                                        "drive",
                                        "expensive"
                                    ]
                                }
                            ]
                        }
                    ],
                    "description": "amazing car"
                }
            ]
        }
    ]
}
]

I expect the following output:

<pre lang="Python">[
{
    "company_name": "GreekNLC",
    "metadata": [
        {
            "name": "Bob",
            "details": [
                {
                    "color": "black",
                    "type": "bmw",
                    "license": "4DFLK",
                    "specs": [
                        {
                            "properties": [
                                {
                                    "info": [
                                        "powerful",
                                        "convertable"
                                    ]
                                },
                                {
                                    "info": [
                                        "sedan",
                                        "germany"
                                    ]
                                },
                                {
                                    "info": [
                                        "drive",
                                        "expensive"
                                    ]
                                }
                            ]
                        }
                    ],
                    "description": "amazing car"
                }
            ]
        }
    ]
}
]

What I have tried:

headers = ['color', 'license', 'type', 'description']

def _key(d):
  return [d.get(i) for i in headers]

def get_specs(b):
  _specs = [c['properties'] for i in b for c in i['specs']]
  return [{"properties": [i for b in _specs for i in b]}]

def merge(d):
  new_merged_list = [[a, list(b)] for a, b in groupby(sorted(d, key=_key), key=_key)]
  k = [{**dict(zip(headers, a)), 'specs': get_specs(b)} for a, b in new_merged_list]
  return k

result = {'name': merge(c.get("details")) for i in data for c in i.get("metadata")}

print(json.dumps(result))

<pre>{"name": [{"color": "black", "specs": [{"properties": [{"info": 
["amazing", "strong"]}]}]}]}