Set user role

curl --request PUT \
  --url https://example.com/api/users/{userId}/role \
  --header 'Content-Type: application/json' \
  --cookie better-auth.session_token= \
  --data '{}'

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "requestId": "<string>",
    "statusCode": 123,
    "details": [
      {
        "message": "<string>",
        "path": "<string>"
      }
    ]
  }
}