payer_id.json

{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "description": "The PayPal payer ID is a masked version of the PayPal account number intended for use with third parties. The account number is reversibly encrypted and the result encoded using a proprietary variant of Base32.",
    "type": "string",
    "format": "paypal_common_payer_id_v3",
    "minLength": 13,
    "maxLength": 13,
    "pattern": "^[2-9A-HJ-NP-Z]{13}$"

}