test_update.json

{
"signature": "dghaskdjhgakjshdgkjasdhkgjhadsglka",
"manifest": {
              "name": "Sparkle OS",
              "version": "1.1.1",
              "compatible": "Pyramid Speaker",
              "date": "2017-05-23T12:47:49.012370955-07:00",
              "artifacts": [
                {
                  "target": "fdt",
                  "uri": "https://192.168.81.2:27182/static/ntc-gr8-crumb.dtb",
                  "type": "ubivol",
                  "size": 39081,
                  "checksum": "6f4883cbad441e3a935f12dc8c68581f17ae151a15fa01eff60f2c02ca52a600"
                },
                {
                  "target": "rootfs",
                  "uri": "https://192.168.81.2:27182/static/rootfs.ubifs",
                  "type": "ubivol",
                  "size": 70705152,
                  "checksum": "8d00d2f30c7e869b01c92d5839e6476b693fa4ef71ceb3f6fcf652fecda306cc"
                },
                {
                  "target": "kernel",
                  "uri": "https://192.168.81.2:27182/static/zImage",
                  "type": "ubivol",
                  "size": 2982496,
                  "checksum": "2bf954c5af29f10a3cb6e4716007b9550b689baade904cd9daa144420edd7abb"
                }
              ]
            }
}