Create Beneficiary

curl --request POST \
  --url https://api.sandbox.isometric.com/registry/v0/beneficiary \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'x-client-secret: <x-client-secret>' \
  --data '{
  "beneficiary_domain": "isometric.com",
  "beneficiary_name": "John Smith"
}'

{
  "domain": "isometric.com",
  "id": "abc_1H0G39139CF0DZB2",
  "name": "Isometric"
}