curl --request POST \
  --url https://api.planetscale.com/v1/organizations/{organization}/databases/{database}/branches/{branch}/roles \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
  "ttl": 123,
  "inherited_roles": [
    "pg_checkpoint"
  ]
}'

{
  "id": "<string>",
  "name": "<string>",
  "access_host_url": "<string>",
  "username": "<string>",
  "password": "<string>",
  "database_name": "<string>",
  "created_at": "<string>",
  "updated_at": "<string>",
  "deleted_at": "<string>",
  "expires_at": "<string>",
  "dropped_at": "<string>",
  "drop_failed": "<string>",
  "expired": true,
  "default": true,
  "ttl": 123,
  "inherited_roles": [
    "pg_checkpoint"
  ],
  "branch": {},
  "actor": {}
}