curl -X POST "http://localhost:9090/igp_rules" \
  -H "Content-Type: application/json" \
  -d \
'{
  "policy": "None",
  "matching_list": [
    {
        "messageid": "0x03ae9509ddf792965c98729b43f0988d689ae17c79619e87e6c670f61eb1d4bc"
    }
  ]
}'

const response = await fetch('http://localhost:9090/igp_rules', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    policy: "None",
    matching_list: [
      {
          messageid: "0x03ae9509ddf792965c98729b43f0988d689ae17c79619e87e6c670f61eb1d4bc"
      }
    ]
  })
});

import requests

response = requests.post('http://localhost:9090/igp_rules', json={
  "policy": "None",
  "matching_list": [
    {
        "messageid": "0x03ae9509ddf792965c98729b43f0988d689ae17c79619e87e6c670f61eb1d4bc"
    }
  ]
})

{
  "count": 4,
  "skipped": []
}