Payload Specification

Param Name	Required	Type	Description
`email`	Yes	String	The email address of the customer
`first_name`	No	String	The first name of the customer
`last_name`	No	String	The last name of the customer
`phone`	No	String	The phone number of the customer
`timezone`	No	String	The timezone of the customer
`age`	No	Number	The age of the customer
`gender`	No	String	Can be either `m` or `f`
`language`	No	String	No more than 2 characters
`address1`	No	String	Street address line 1
`address2`	No	String	Street address line 2
`address3`	No	String	Street address line 3
`city`	No	String	Customer address city
`state`	No	String	Customer address state
`postal_code`	No	String	Customer address zip code
`country`	No	String	Customer address country
`birthdate`	No	String	Must match format `YYYY-MM-DD`
`is_unsubscribed`	No	Boolean	Whether the customer is unsubscribed
`metadata`	No	JSON Object	Any arbitrary data about the customer