https://shibuya24.info/entry/unity-animation-event で使用したサンプルコード

EventReceiverSample.cs

using UnityEngine;
using System.Collections.Generic;

public class EventReceiverSample : MonoBehaviour
{   
    public enum AnimType {
        TYPE_1, TYPE_2, TYPE_3
    }

    /// <summary>【実行可能】引数の無い関数</summary>
    public void CallNoArg () => Debug.Log ("no arg");

    /// <summary>【実行可能】float型の引数</summary>
    public void SetFloat (float value) => Debug.Log (value);

    /// <summary>【実行可能】int型の引数</summary>
    public void SetInt (int value) => Debug.Log (value);

    /// <summary>【実行可能】bool型の引数</summary>
    public void SetBool (bool value) => Debug.Log (value);

    /// <summary>【実行可能】string型の引数</summary>
    public void SetString (string value) => Debug.Log (value);

    /// <summary>【実行可能】enum型の引数</summary>
    public void SetType (AnimType type) => Debug.Log (type);
    
    /// <summary>【実行可能】GameObject型の引数</summary>
    public void SetGameObject(GameObject obj) => Debug.Log(obj);
    
    /// <summary>【実行可能】コンポーネントの引数</summary>
    public void SetCollider(BoxCollider obj) => Debug.Log(obj);
    
    /// <summary>【実行可能】Objectの引数</summary>
    public void SetObject(ScriptableObject obj) => Debug.Log(obj);

    /// <summary>【不可】複数引数</summary>
    public void SetMultiArgs (int value1, float value2) 
        => Debug.Log (value1 + " / " + value2);

    /// <summary>【不可】クラス型の引数</summary>
    public void SetAnimData (AnimData data) => Debug.Log (data);

    /// <summary>【不可】List型</summary>
    public void SetList (List<int> list) => Debug.Log (list);
}

[System.Serializable]
public class AnimData
{
    public int index;
    public float value;
    public bool flg;
}

public class ObjectData : ScriptableObject
{
    public int index;
    public float value;
    public bool flg;
}