curl --request POST \
  --url https://api-sandbox.argyle.com/partners/v2/users \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "client": "39096494-45c8-4fd8-9454-3d1cb2d62db7",
  "first_name": "Jane",
  "last_name": "Doe",
  "ssn": "000-00-0000",
  "email": "jane@example.com",
  "phone_number": "+15555555555",
  "address": {
    "city": "New York",
    "line1": "123 Main St",
    "line2": null,
    "state": "NY",
    "country": "US",
    "postal_code": null
  },
  "birth_date": {
    "year": 1990,
    "month": 1,
    "day": 13
  },
  "external_id": null,
  "external_metadata": {
    "suppress_verification": true
  }
}
'

{
  "user_token": "<SECRET>",
  "id": "7a614711-066f-4b6b-b319-4c6236b5acc1"
}