{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://opensea.io/schemas/X402SettlementFields",
  "title": "X402SettlementFields",
  "type": "object",
  "properties": {
    "caller_address": {
      "type": "string"
    },
    "tx_hash": {
      "type": "string"
    },
    "chain_id": {
      "type": "integer",
      "format": "int64"
    }
  }
}