TLB:
message_description#_ verifier_id:uint256 valid_until:uint32 source_addr:MsgAddress target_addr:MsgAddress msg:^Cell = MessageDescription;
message_signatures#_ {n:#} signature:(bits 512) pub_key:uint256 next:^(MessageSignatureData n) = MessageSignatureData (n + 1);
message_signatures_last#_ signature:(bits 512) pub_key:uint256 = MessageSignatureData 1;
forward_message#75217758 {n:#} query_id:uint64 msg:^MessageDescription signatures:^(MessageSignatureData n) = InternalMsgBody;
text#_ b:bits = TextCell;
verifier_settings#_ multi_sig_threshold:uint8 pub_key_endpoints:(HashMapE 256 uint32) name:^(TextCell) marketing_url:^(TextCell) = VerifierSettings;
update_verifier#6002d61a query_id:uint64 verifier_id:uint256 settings:VerifierSettings = InternalMsgBody;
remove_verifier#19fa5637 query_id:uint64 id:uint256 = InternalMsgBody;
verifier#_ admin:MsgAddress settings:VerifierSettings = Verifier;
storage#_ verifiers:(HashMapE 256 Verifier) = Storage;