curl --request POST \
  --url https://api.mainnet.abs.xyz/zks_getL2ToL1MsgProof \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "zks_getL2ToL1MsgProof",
  "params": [
    12345,
    "0x0000000000000000000000000000000000000000",
    "0x0000000000000000000000000000000000000000000000000000000000000000"
  ]
}'

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "id": 123,
    "proof": [
      "<string>"
    ],
    "root": "<string>"
  }
}