If an account is suspended, it will not be retrievable on the users/show endpoint. You’ll get:
{
"errors": [
{
"code": 63,
"message": "User has been suspended."
}
]
}
If an account does not exist / has been deleted, you’ll see:
{
"errors": [
{
"code": 50,
"message": "User not found."
}
]
}
Otherwise, the users/show endpoint will work normally, indicating that the user is not suspended or deleted.