curl --request POST \
  --url https://rpc-mainnet.solanatracker.io/ \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "id": "db16f277-1a22-41ff-9f85-f37e2cd77900",
  "method": "getMultipleAccounts",
  "params": [
    [
      "vines1vzrYbzLMRdu58ou5XTby4qAqVRLmqo36NKPTg",
      "4fYNw3dojWmQ4dXtSGE9epjRGy9pFSx62YypT7avPYvA"
    ]
  ]
}'

{
  "jsonrpc": "2.0",
  "id": "db16f277-1a22-41ff-9f85-f37e2cd77900",
  "result": {
    "context": {
      "apiVersion": "2.0.15",
      "slot": 341197247
    },
    "value": [
      null
    ]
  }
}