FriendRequest(好友请求实体)

{
    "time": -9007199254740991,
    "initiator_id": -9007199254740991,
    "initiator_uid": "string",
    "target_user_id": -9007199254740991,
    "target_user_uid": "string",
    "state": "pending",
    "comment": "string",
    "via": "string",
    "is_filtered": true
}