Resolved: Removing null keys from a json array of objects

policies=$(az keyvault show --name $KeyVaultName --resource-group $ResourceGroupName --query "properties.accessPolicies")

[
  {
    "applicationId": null,
    "objectId": "0123b8ac-57a6-1234-9816-ff5swa4b6d0b",
    "permissions": {
      "certificates": [
        "Get",
        "Release"
      ],
      "keys": null
      "secrets": null,
      "storage": null
    },
    "tenantId": "abc-123"
  },
  {
    "applicationId": null,
    "objectId": "f4340076-d4ea-1234-a719-c75dfsat4d17",
    "permissions": {
      "certificates": null,
      "keys": [
        "Get",
        "Release"
      ],
      "secrets": null,
      "storage": null
    },
    "tenantId": "abc-123"
  }
]

del(.[].permissions[] | nulls)