SpringBoot, hibernet

Temporal.TIMESTAMP gives null value in postman

` @NonNull
@Column(name ="LastModifiedTime")
@Temporal(TemporalType.TIMESTAMP)
private Date lastModifiedTime;
@JsonProperty
@NonNull
@Column(name = "IsActive")
private boolean isActive;
 
@NonNull
@Column(name = "ModifiedUserID")
private int modifiedUserID; 

public Date getLastModifedTime() {
    return lastModifiedTime;
}
public void setLastModifedTime(Date lastModifiedTime ) {
    this.lastModifiedTime = lastModifiedTime;
    
}
public boolean getIsActive() {
    return isActive;
}
public void setIsActive(boolean isActive) {
    this.isActive = isActive;
}
public int getModifiedUserID() {
    return modifiedUserID;
}
public void setModifiedUserID(int modifiedUserID) {
    this.modifiedUserID = modifiedUserID;
}

in post man the value for timestamp is null

postman
{
"impactName": "8 user",
"description": "success",
"isActive" : 7`
"modifiedUserID": 8

}
response
{
"isActive": true,
"modifiedUserID": 8,
"id": 10,
"impactName": "8 user",
"description": "success",
"lastModifedTime": null
}