Lock Language Dictionary in Wordpress plugin

Thanks! I’ve gotten it to not give me an error – but the code doesn’t change any of the output. This is what worked (as in not giving the json error):

{
"dict": {
"signin": {
"welcome": "Welcome HealthDoers!",
"signupTitle": "First Time Log In",
"signUpLabel": "First Time Log In",
"signUpSubmitLabel": "First Time Log In",
"title": "Log me in"
}
}
}

We’re in WP 4.7.4 and using Login by Auth0 plugin 3.2.19 (though, we tried this in 3.2.14, as well – same results). All with lock version 9.2.