const UserEntity = new EntityType('User', {
  canonicalEmail: { type: Types.string, index: true },
  firstName: { type: Types.string },
  lastName: { type: Types.string },
  genderPreference: { type: Types.number },
  createdAt: { type: Types.dateTime, index: true }
})

const newUser = UserEntity
  user.setProperty(
    'canonicalEmail',
    '[email protected]'
  )
  insertEntity((newUser)
  .then((user) => {
    console.log(`user ${newUser.getProperty('canonicalEmail')} added`)
  })

getEntityByKeyValue(
  UserEntity.type,
  UserEntity.schema.canonicalEmail.type,
  'canonicalEmail',
  '[email protected]'
)
.then((user) => {
 if (user) {
   console.log(`user ${user.getProperty('canonicalEmail')} retrieved`)
 }
})