This looks like a miner payout address for Poolin (see the miner-identifications configurations: config #1, config #2, config #3, config #4)
{
"isvalid": true,
"address": "3KJrsjfg1dD6CrsTeHdHVH3KqMpvL2XWQn",
"scriptPubKey": "a914c1418f4a051fc4a331397b6d29897f7a73bcbfea87",
"isscript": true,
"iswitness": false
}{
"version": 5,
"hash": "c1418f4a051fc4a331397b6d29897f7a73bcbfea"
}