Lock up a surrendering prisoner.
The item id for Cable Tie in unturned is 1197. You can use this ID with the commands below to spawn the item, give it to a player or buy it on a modded economy server.
Useable: Arrest_Start
Size_X: 1
Size_Y: 1
Size_Z: 0.25
Strength: 64
Blueprints: 2
Blueprint_0_Type: Tool
Blueprint_0_Supplies: 2
Blueprint_0_Supply_0_ID: 65
Blueprint_0_Supply_0_Amount: 2
Blueprint_0_Supply_1_ID: 69
Blueprint_0_Supply_1_Amount: 1
Blueprint_0_Build: 27
Blueprint_1_Type: Tool
Blueprint_1_Supply_0_ID: 1197
Blueprint_1_Product: 65
Blueprint_1_Build: 27