curl --request POST \
  --url https://api.mainnet.abs.xyz/eth_newBlockFilter \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_newBlockFilter",
  "params": []
}'

{
  "jsonrpc": "2.0",
  "result": "0xb415d4b0e6ca750802be8c84c99a68170deeb9ed09c4e2eb0dc5299ab715e978",
  "id": 1
}