curl --request POST \
  --url https://api.uniblock.dev/uni/v1/json-rpc?chainId=starknet \
  --header 'content-type: application/json' \
  --data '{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "starknet_getClassAt",
    "params": {
      "block_id": {
        "block_hash": "0x041b10c45dc3f39372f7b9409261cac9d880c5d75a5bb077d028db20b1bd76c4"
      },
      "contract_address": "0x03b554093fb0a7460913be2d5c011cb5ac4333dfcfe6125851bcd3f926a3b558"
    }
  }'

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "abi": "[{\"type\": \"impl\", \"name\": \"ISTARKSImpl\", \"interface_name\": \"ins::ins::ISTARKS\"}, {\"type\": \"interface\", \"name\": \"ins::ins...",
    "contract_class_version": "0.1.0",
    "entry_points_by_type": {
      "CONSTRUCTOR": [
        {
          "__truncated": true
        }
      ],
      "EXTERNAL": [
        {
          "__truncated": true
        },
        {
          "__truncated": true
        }
      ],
      "L1_HANDLER": []
    },
    "sierra_program": [
      "0x1",
      "0x3",
      "0x0",
      "0x361",
      "..."
    ]
  }
}