message: User identities in a new dictionary property
  Moving user identities support from the property "identityId" list to a new dictionary property named "userAssignedIdentities".
diff: "modelAsString": false
  }
  },
  - "identityIds": {
  - "type": "array",
  - "items": {
  - "type": "string"
  + "userAssignedIdentities": {
  + "type": "object",
  + "additionalProperties": {
  + "type": "object",
  + "properties": {
  + "principalId": {
  + "readOnly": true,
  + "type": "string",
  + "description": "The principal id of user assigned identity."
  + },
  + "clientId": {
  + "readOnly": true,
  + "type": "string",
  + "description": "The client id of user assigned identity."
  + }
  + }
  },
  - "description": "The list of user identities associated with the Virtual Machine. The user identity references will be ARM resource ids in the form: '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ManagedIdentity/identities/{identityName}'."
  + "description": "The list of user identities associated with the Virtual Machine. The user identity dictionary key references will be ARM resource ids in the form: '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ManagedIdentity/userAssignedIdentities/{identityName}'."
  }
  },
  "description": "Identity for the virtual machine."
  "modelAsString": false
  }
  },
  - "identityIds": {
  - "type": "array",
  - "items": {
  - "type": "string"
  + "userAssignedIdentities": {
  + "type": "object",
  + "additionalProperties": {
  + "type": "object",
  + "properties": {
  + "principalId": {
  + "readOnly": true,
  + "type": "string",
  + "description": "The principal id of user assigned identity."
  + },
  + "clientId": {
  + "readOnly": true,
  + "type": "string",
  + "description": "The client id of user assigned identity."
  + }
  + }
  },
  - "description": "The list of user identities associated with the virtual machine scale set. The user identity references will be ARM resource ids in the form: '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ManagedIdentity/identities/{identityName}'."
  + "description": "The list of user identities associated with the virtual machine scale set. The user identity dictionary key references will be ARM resource ids in the form: '/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ManagedIdentity/userAssignedIdentities/{identityName}'."
  }
  },
  "description": "Identity for the virtual machine scale set."
  