salix/services/loopback/common/methods/user-config/getUserConfig.js

module.exports = function(Self) {
    Self.remoteMethodCtx('getUserConfig', {
        description: 'returns the information from UserConfig model for the active user',
        accepts: [],
        returns: {
            type: 'object',
            root: true
        },
        http: {
            path: `/getUserConfig`,
            verb: 'get'
        }
    });

    Self.getUserConfig = async ctx => {
        let token = ctx.req.accessToken;
        let currentUserId = token && token.userId;

        return await Self.findOne({userFk: currentUserId});
    };
};