Finally, submit the file using the FileId to mark the end of the draft. You will no longer be able to modify the case past this stage.

var client = new RestClient("https://api.medicys-conventionnel.fr/api/JudicialFile/ConfirmFileSubmission");
client.Timeout = -1;
var request = new RestRequest(Method.POST);
request.AddParameter("text/plain", "{\"FileId\": \"27FF7826-0DED-4101-9FB4-81991117B656\",\"ModifiedDate\": \"2020-06-01T15:42:23.787Z\"}",  ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
Console.WriteLine(response.Content);
var client = new RestClient("https://staging-api.medicys-conventionnel.fr/api/JudicialFile/ConfirmFileSubmission");
client.Timeout = -1;
var request = new RestRequest(Method.POST);
request.AddParameter("text/plain", "{\"FileId\": \"27FF7826-0DED-4101-9FB4-81991117B656\",\"ModifiedDate\": \"2020-06-01T15:42:23.787Z\"}",  ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
Console.WriteLine(response.Content);