User resource

Field	Description
`uuid` string	A Universally Unique IDentifier (UUID) as a human-readable string using hexadecimal text with inserted hyphen characters. Example: `de305d54-75b4-431b-adb2-eb6b9e546014`
`external_user_id` string	Your own user ID (format: [a-zA-Z0-9-_]{1,128})

Example user resource

{
  "uuid": "6fe87fd6-9ad2-4d3b-b5ad-b6c440638c17",
  "external_user_id": "A6JEJIID1919BDS"
}