[
  {
    "username": "cliente",
    "email": "cliente@empresa.com",
    "primary_color": "#ff9800",
    "button_text": "Ayuda",
    "button_size": "small",
    "button_variant": "ghost",
    "button_border_radius": "20px",
    "button_shadow": true,
    "button_disabled": false
  },
  {
    "username": "testuser",
    "email": "pruebas@localhost.com",
    "primary_color": "#9c27b0",
    "button_text": "Test Botón",
    "button_size": "medium",
    "button_variant": "solid",
    "button_border_radius": "4px",
    "button_shadow": false,
    "button_disabled": true
  }
]