type FetchPermissionsRequest = {
  chainId: string; // uint256, hex formatted
  account: string; // address
  spender: string; // address
  pageOptions?: {
    pageSize number; // number of items requested, defaults to 50
    cursor string; // identifier for where the page should start
  }
}
 
type FetchPermissionsResult = {
  permissions: FetchPermissionsResultItem[];
  pageDescription: {
    pageSize number; // number of items returned
    nextCursor string; // identifier for where the next page should start
  }
}
 
type PageDescription = 
 
type FetchPermissionsResultItem = {
  createdAt: number; // UTC timestamp for when the permission was granted
  permissionHash: string;
  signature: string;
  permission: {
    account: string; // address
    spender: string; // address
    token: string; // address
    allowance: string; // base 10 numeric string
    period: number; // unix time, seconds
    start: number; // unix time, seconds
    end: number; // unix time, seconds
    salt: string; // base 10 numeric string
    extraData: string // hex formatted bytes, i.e. "0x" for empty data
  };
}

curl --location 'https://wallet-chain-proxy-dev.cbhq.net?targetName=base-sepolia' \
--header 'Content-Type: application/json' \
--data '{
    "jsonrpc":"2.0",
    "method":"wallet_fetchPermissions",
    "params":["0x764e97e81a0b1138c70525499037e27e442bd3b2","0x14A34","0xd4e17478581878a967aa22d45a5158a9fe96aa08"],
    "id":1
}'

{
  "permissions": [
    {
      "createdAt": 1730320800,
      "permissionHash": "0xe15ff6f0f1e666a7b55e3886af487b0f86f17dad1c103932aa215adcd9d3420f",
      "signature": "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",
      "spendPermission": {
        "spender": "0xd4e17478581878a967aa22d45a5158a9fe96aa08",
        "account": "0x764e97e81a0b1138c70525499037e27e442bd3b2",
        "token": "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
        "allowance": "10000000000",
        "period": 86400,
        "start": 1724264802,
        "end": 17242884802,
        "salt": "1",
        "extraData": "0x"
      }
    },
    {
      "createdAt": 1730320968,
      "permissionHash": "0x4c1f453f72463e7ba809a33fd2139844c0fcc65eb41301147a91aadc4f784468",
      "signature": "0x0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000260000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000c0000000000000000000000000000000000000000000000000000000000000012000000000000000000000000000000000000000000000000000000000000000170000000000000000000000000000000000000000000000000000000000000001b5b5e61db096d44311246729f88cf1fe57fe233e5315f94cf541e6fe3086eaef5142efb9267d19cd64b97866a8cfa6c3b872da47264db3c15d36d75e44373f9f000000000000000000000000000000000000000000000000000000000000002549960de5880e8c687434170f6476605b8fe4aeb9a28632c7995cf3ba831d9763050000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000f37b2274797065223a22776562617574686e2e676574222c226368616c6c656e6765223a22704746725847794a654c514f427a6e554c3763533937726435654e46634d396a3357647064704f565f474d222c226f726967696e223a22687474703a2f2f6c6f63616c686f73743a33303035222c2263726f73734f726967696e223a66616c73652c226f746865725f6b6579735f63616e5f62655f61646465645f68657265223a22646f206e6f7420636f6d7061726520636c69656e74446174614a534f4e20616761696e737420612074656d706c6174652e205365652068747470733a2f2f676f6f2e676c2f796162506578227d00000000000000000000000000",
      "spendPermission": {
        "spender": "0xd4e17478581878a967aa22d45a5158a9fe96aa08",
        "account": "0x764e97e81a0b1138c70525499037e27e442bd3b2",
        "token": "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
        "allowance": "10000000000",
        "period": 86400,
        "start": 1724264802,
        "end": 17242884802,
        "salt": "2",
        "extraData": "0x"
      }
    }
  ]
}