Nested Schema

var UserSchema = [new Schema({
        username: {
            type: String
        },
        email: {
            type: String,
        },
        password: {
            type: String
        },
        ethAddress: {
            type: String
        },
        privateKey: {
            type: String
        },
        transactions: new Schema({
           time: {
               type: String
        },
        date : {
            type: String
        },
        transactionType : {
            type: String
        },
        email : {
            type: String
        },
        amount: {
            type: String
        },
        txHash:{
            type: String
        }
    })]
})