[JsonObject]
public class RootObject
{
    [JsonProperty]
    public Profile ProfileInfo { get; set; } = new Profile();

    [JsonProperty]
    public ImmutableList<Info> AdditionalInfo { get; set; } = ImmutableList.Create<Info>();
}

var rootObject = JsonConvert.DeserializeObject<RootObject>(json);

<Type Name="System.Collections.Immutable.ImmutableList" Dynamic="Required All" />

dynamic obj = JsonConvert.DeserializeObject(rpcStatus);

dynamic obj = JsonConvert.DeserializeObject<ExpandoObject>(rpcStatus);