muti-arch without mediaType application/vnd.docker.container.image.combined+json

gistfile1.json

{
  "dependencies":  [{
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     "length": 16724,
     "digest": "sha256:3c3a4604a545cdc127456d94e421cd355bca5b528f4a9c1905b15da2eb4a4c6b"
     },
     {
     "mediaType": "application/vnd.docker.container.image.rootfs.diff+x-tar",
     "length": 16724,
     "digest": "sha256:3c3a4604a545cdc127456d94e421cd355bca5b528f4a9c1905b15da2eb4a4c6b"
     }
  ],
  "target": {
      "mediaType": "application/vnd.docker.container.image.v1+json",
      "length": 7023,
      "digest": "sha256:b5b2b2c507a0944348e0303114d8d93aaaa081732b86451d9bce1f432a537bc7",
      "labels": {
         "architecture": "arm64",
          "os": "linux"  
       },
  "alternates": [
    {
      "mediaType": "application/vnd.docker.container.image.v1+json",
      "length": 7023,
      "digest": "sha256:b5b2b2c507a0944348e0303114d8d93aaaa081732b86451d9bce1f432a537bc7",
      "labels": {
        "architecture": "ppc",
        "os": "linux"  
      },
      "dependencies":  [{
         "mediaType": "application/vnd.docker.container.image.rootfs.diff+x-tar",
         "length": 16724,
         "digest": "sha256:3c3a4604a545cdc127456d94e421cd355bca5b528f4a9c1905b15da2eb4a4c6b"
         },
         {
         "mediaType": "application/vnd.docker.container.image.rootfs.diff+x-tar",
         "length": 16724,
         "digest": "sha256:3c3a4604a545cdc127456d94e421cd355bca5b528f4a9c1905b15da2eb4a4c6b"
         }  
      ]
    },
    {
      "mediaType": "application/vnd.docker.container.image.v1+json",
      "length": 7023,
      "digest": "sha256:b5b2b2c507a0944348e0303114d8d93aaaa081732b86451d9bce1f432a537bc7",
      "labels": {
        "architecture": "s390",
        "os": "linux"  
      },
      "dependencies":  [{
         "mediaType": "application/vnd.docker.container.image.rootfs.diff+x-tar",
         "length": 16724,
         "digest": "sha256:3c3a4604a545cdc127456d94e421cd355bca5b528f4a9c1905b15da2eb4a4c6b"
         },
         {
         "mediaType": "application/vnd.docker.container.image.rootfs.diff+x-tar",
         "length": 16724,
         "digest": "sha256:3c3a4604a545cdc127456d94e421cd355bca5b528f4a9c1905b15da2eb4a4c6b"
         }  
      ]
    }
  ]
}