Sign Instance
GET /data/api/signs/137/?format=api
http://labasi.acdh.oeaw.ac.at/data/api/signs/137/?format=api", "sign_name": "BU", "abz_number": "371", "meszl_number": "580", "image_1": "http://labasi.acdh.oeaw.ac.at/media/sign_img/sign_371.bmp", "image_2": null }{ "url": "