Linq Grouping based on other keys and values table

Question

I have two Entities ItemChange and PK:

[Table("Sync_Changes")]
public class ItemChange
{
    public Guid AgentId { get; set; }

    public DateTime ChangeTime { get; set; }

    [Required]
    public string Descriminator { get; set; }

    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.None)]
    public Guid ID { get; set; }

    [NotMapped]
    public object Item { get; set; }


    public virtual ICollection<PK> PKs { get; set; }

    public virtual ChangeType State { get; set; }
}

And the PK class:

[Table("Sync_PKs")]
public class PK
{
    public PK(string key, object value)
    {
        Key = key;
        Value = value?.ToString();
        ValueType = value?.GetType().Name;
    }

    [Key]
    [Column(Order = 0)]
    [ForeignKey(nameof(Change))]
    public Guid ChangeId { get; set; }

    [Key]
    [Column(Order = 1)]
    public string Key { get; set; }

    [Required]
    public string Value { get; set; }

    [Required]
    public string ValueType { get; set; }

    public virtual ItemChange Change { get; set; 
 }

I want to group the ItemsChange based on the PKs, for example i have two ItemChange that have the Pks [({Key="Id",Value="1"},{Key="GroupId",Value="2"})] and the ChangeType [Created,Updated].

i want to know how to do this with Linq, or Mysql Script. Screenshots of the both tables: Changes that i want to group theme base on the pks. PKs