Save a request rule

Example request

{
  "label": "Test",
  "conditions": {
    "url_pattern": "^/forum",
    "method": "GET"
  },
  "requirements_script": "return []",
  "action_script": "return \"this is a test\"",
  "script_type": "javascript",
  "graph_state": "{\"property1\": \"value1\"}",
  "editing_mode": "manual"
}