const data = { "name": "Nombre", "last_name": "Apellido", "email": "correo@gmail.com", "sex": "f", "id_card": "123456789" } const friend_data = { "name": "Nombre1", "last_name": "Apellido1", "email": "correo1@gmail.com", "sex": "m", "id_card": "987654321", "friend": [data] } const friend_data2 = { "name": "Nombre2", "last_name": "Apellido2", "email": "correo2@gmail.com", "sex": "m", "id_card": "987654322", "friend": [data] } const friend_data3 = { "name": "Nombre3", "last_name": "