curl --request PATCH \
  --url https://api.lava.so/v1/meters/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "tiers": [
    {
      "start": "<string>",
      "rate": "<string>"
    }
  ]
}
'

{
  "meter_id": "<string>",
  "meter_slug": "<string>",
  "name": "<string>",
  "rate_type": "fixed",
  "tiers": [
    {
      "start": 123,
      "rate": "<string>",
      "type": "tokens_1m"
    }
  ],
  "created_at": "2023-11-07T05:31:56Z"
}