First, check your private token on your account page , Second, the generic syntax to execute the web service is the one below.
curl -H 'Authorization: Token token=<your_private_token>' -X POST -F job[webapp_id]=<service_id> -F job[param]='' -F files[0]=@<path_to_file0> -F files[1]=@<path_to_file1> -F job[file_url]=<your_file_url> -F job[dataset]=<dataset_name> https://allgo.inria.fr/api/v1/jobs
This request will return you, either the errors, or if it's ok, your job_id and the average execution time for this app.
Third, check the resulting job to get the url files with :curl -H 'Authorization: Token token=<your_private_token>' -X GET https://allgo.inria.fr/api/v1/jobs/<job_id>with <job_id> the job number returned by the former cURL command.
This command will give you the list of your files, so you can download them