async def METHOD_NAME(context, url, data=None, json=None):
    """Perform a POST request against AMO's API.
    Automatically fills in the HTTP header with the Authorization token.
    Passes values in the `data` dictionary as FORM data.
    Assumes request will return a valid json object.
    """
    log.debug('Calling amo_post() with URL "{}"'.format(url))
    async with timeout(270):  # 4 minutes, 30 sec.
        resp = context.session.post(url, headers={"Authorization": "JWT {}".format(generate_JWT(context))}, data=data, json=json)
        async with resp as r:
            log.debug('amo_post() for URL "{}" returned HTTP status code: {}'.format(url, r.status))
            r.raise_for_status()
            # we silence aiohttp in case we have Null returns from AMO API
            returned_value = await r.json(content_type=None)
            log.debug('amo_post() for URL "{}" returned: {}'.format(url, returned_value))
            return returned_value