I need help getting custom model data to work

this is the json i have, as well as the command and textures I have. But the texture won't show up (just the terracotta)
/data merge entity @e[tag=1,limit=1] {equipment:{chest:{id:"minecraft:terracotta",Count:1b,tag:{CustomModelData:1,display:{Name:'{"text":"1"}'}}},head:{id:"minecraft:terracotta",Count:1b,tag:{CustomModelData:1,display:{Name:'{"text":"1"}'}}}}}