curl --request POST \
  --url 'https://rpc-mainnet.solanatracker.io/?api_key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "getMultiplePrimaryDomains",
  "params": [
    [
      "9aoUCn5J4sxhvYERCVwVnakPQxyXTHQVXe86CUJYxY8p",
      "FMmaHPDL47V1gXsfh9WjgAT7Er3dfDvarQubTU1Jxc1r"
    ]
  ]
}
'

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "context": {
      "slot": 423867852,
      "apiVersion": "3.0.0"
    },
    "value": {
      "results": [
        {
          "wallet": "9aoUCn5J4sxhvYERCVwVnakPQxyXTHQVXe86CUJYxY8p",
          "domain": "solanatracker.sol"
        },
        {
          "wallet": "FMmaHPDL47V1gXsfh9WjgAT7Er3dfDvarQubTU1Jxc1r",
          "domain": null
        }
      ]
    }
  }
}