bedrock-samples/resource_pack/animation_controllers/happy_ghast.animation_controllers.json

{
  "format_version" : "1.10.0",
  "animation_controllers" : {
    "controller.animation.happy_ghast.move" : {
      "initial_state" : "default",
      "states" : {
        "default" : {
          "animations" : [ "move" ]
        }
      }
    },
    "controller.animation.happy_ghast.scale" : {
      "initial_state" : "default",
      "states" : {
        "default" : {
          "animations" : [ "scale" ]
        }
      }
    }
  }
}