Superman on Nostr: What is this?

{ "id": "7a1c1808d3d4771b11eba25723de489d1b50282961bb5036ae331dff52602109", "pubkey": "509547efe7eb4b32b37b27b1407af12b12f3037a8b937554f44884e9555ef439", "created_at": 1726317172, "kind": 1, "tags": [], "content": "What is this?\n\nhttps://video.nostr.build/7b3f17141b9b14237a5a24da9eb8dfbd4dafc35a424a0127b6ba54d929ea8083.mp4", "sig": "d6240f4d21e3112659b703a94b99f56fdb15294e5f89fceea4d46aedd0dbdf9ea7fd3d00150d43269b4b57c3ddc219e9348f96d6c2f5054515df73ae075fb95f" }