mutation insertCustomerOneSocial(
              $email: String! ="majefoj583@bunlets.com", 
              $password: String! = "randompsw", 
              $signupMethod: signup_methods_enum! = facebook, 
              $name: String = "Gastone",
              $phone: String, 
              $surname: String = "Birillo",
            ) {
              insert_customers_one(object: {
                meeting_type: talks,
                user: {data: {
                  email: $email, 
                  password: $password, 
                  role: customer, 
                  status: active, 
                  signup_method: $signupMethod, 
                  agreements: {data: {
                    base: true,
                    marketing: false, 
                    third_party: false,
                    profiling: false,
                  }}, 
                  registry: {data: {
                    name: $name, 
                    surname: $surname, 
                    phone: $phone,  
                    sex: male, # placeholder
                    birth_date: "1970-01-01" # placeholder  
                    address: {data: {}}   # all default or nullable values
                    birth_place: {data: {}}           # all default or nullable values   
                  }}
                }
              }}) {
                user {
                  id
                  email
                  role
                  status
                  signup_method
                  registry {
                    name
                    surname
                    phone
                  }                
                }
              }
            }