/setblock 3 4 -210 minecraft:spawner{MaxNearbyEntities:6s,RequiredPlayerRange:16s,SpawnCount:4s,SpawnData:{CustomName:"{\"text\":\"jeb_\"}",id:"minecraft:sheep"},MaxSpawnDelay:800s,Delay:51s,SpawnRange:4s,MinSpawnDelay:200s,SpawnPotentials:[{Entity:{CustomName:"{\"text\":\"jeb_\"}",id:"minecraft:sheep"},Weight:1}]}