curl --request PUT \
  --url https://api.togai.com/v2/price_plans/{price_plan_id}/pricing_rules \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "pricingRules": [
    {
      "name": "<string>",
      "order": 123,
      "computation": "<string>",
      "action": {
        "target": "<string>",
        "id": "<string>",
        "description": "<string>",
        "metadata": {}
      },
      "condition": "<string>"
    }
  ]
}
'

{
  "data": [
    {
      "id": "um.1zYnCiM9Bpg.lv25y",
      "name": "Rule 1",
      "version": 1,
      "order": 1,
      "computation": "{\"+\": [{\"var\": \"revenue.urc.um.21lmjsfcXPs.d929R\"}, {\"var\": \"usage.urc.um.21lmjObpMV6.9XeFl\"}]}\n",
      "condition": "{\">\": [{\"+\": [{\"var\": \"revenue.urc.um.21lmjObpMV6.9XeFl\"}, {\"var\": \"usage.urc.um.21lmjObpMV6.9XeFl\"}]}, 100]}\n",
      "action": {
        "type": "UPDATE",
        "target": "revenue.ff.addon.21ERXMFJ83s.9EM5S"
      }
    }
  ]
}