There you go with a contract using your tool:
Holy Xmas 10
PC ID: 1-27-8082829-62
Eliminate those targets with the «Holy Xmas 10»-gun (HX10). Be aware: It’s loud. And the targets are never alone. Not too easy… But there’s two of those guns in the map up for graps. And you’re allowed to ko people and use different disguises. Should be easy, right?
Edit: Finished it SA in about 5 minutes. Probably not the fastest route. But I’m no speedrunner.
… and here’s the JSON:
{"Author":"djsojus","MissionId":"cc91b5a2-aa39-4dbd-b117-c972b5fc266b","MissionName":"LOCATION_GOLDEN_GECKO","TimeLimit":510,"ExitId":"Exit_Gecko_ExitName","CreateFromParamsJ":{"creationData":{"Title":"Holy Xmas 10","Description":"Happy Holidays, 47! As a treat you're allowed to go wild with the HX-10. We've selected some people that were bad this year. So no hard feelings. Go wild!","Targets":[{"Weapon":{"RepositoryId":"e206ed81-0559-4289-9fec-e6a3e9d4ee7c","KillMethodBroad":"smg","KillMethodStrict":"","RequiredKillMethodType":3,"RequiredKillMethod":"smg"},"Outfit":{"RepositoryId":"","Required":false,"IsHitmanSuit":false},"RepositoryId":"727c2c45-1666-4c35-85f0-48f5ab4f9802","Selected":true},{"Weapon":{"RepositoryId":"e206ed81-0559-4289-9fec-e6a3e9d4ee7c","KillMethodBroad":"smg","KillMethodStrict":"","RequiredKillMethodType":3,"RequiredKillMethod":"smg"},"Outfit":{"RepositoryId":"","Required":false,"IsHitmanSuit":false},"RepositoryId":"1e6d10fb-fdf7-4013-bf57-db2290b911b5","Selected":true},{"Weapon":{"RepositoryId":"e206ed81-0559-4289-9fec-e6a3e9d4ee7c","KillMethodBroad":"smg","KillMethodStrict":"","RequiredKillMethodType":3,"RequiredKillMethod":"smg"},"Outfit":{"RepositoryId":"","Required":false,"IsHitmanSuit":false},"RepositoryId":"40ee3be7-c498-442d-9cb1-dae0703cddbf","Selected":true}],"ContractConditionIds":[]}}}