diff --git a/overflow-core-api/src/main/kotlin/top/mrxiaom/overflow/contact/RemoteUser.kt b/overflow-core-api/src/main/kotlin/top/mrxiaom/overflow/contact/RemoteUser.kt
new file mode 100644
index 00000000..d4294fcd
--- /dev/null
+++ b/overflow-core-api/src/main/kotlin/top/mrxiaom/overflow/contact/RemoteUser.kt
@@ -0,0 +1,5 @@
+package top.mrxiaom.overflow.contact
+
+interface RemoteUser {
+    val onebotData: String
+}
diff --git a/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/BotWrapper.kt b/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/BotWrapper.kt
index 1b7093e7..3ced72e1 100644
--- a/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/BotWrapper.kt
+++ b/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/BotWrapper.kt
@@ -2,6 +2,7 @@ package top.mrxiaom.overflow.internal.contact
 
 import cn.evolvefield.onebot.sdk.response.contact.LoginInfoResp
 import cn.evolvefield.onebot.client.core.Bot
+import cn.evolvefield.onebot.sdk.util.gson
 import kotlinx.coroutines.*
 import me.him188.kotlin.jvm.blocking.bridge.JvmBlockingBridge
 import net.mamoe.mirai.LowLevelApi
@@ -18,6 +19,7 @@ import net.mamoe.mirai.supervisorJob
 import net.mamoe.mirai.utils.*
 import org.java_websocket.framing.CloseFrame
 import top.mrxiaom.overflow.contact.RemoteBot
+import top.mrxiaom.overflow.contact.RemoteUser
 import top.mrxiaom.overflow.contact.Updatable
 import top.mrxiaom.overflow.internal.Overflow
 import top.mrxiaom.overflow.internal.contact.data.FallbackFriendGroups
@@ -37,7 +39,7 @@ internal class BotWrapper private constructor(
     private var implBot: Bot,
     defLoginInfo: LoginInfoResp,
     override val configuration: BotConfiguration
-) : QQAndroidBot(), RemoteBot, Updatable, CoroutineScope {
+) : QQAndroidBot(), RemoteUser, RemoteBot, Updatable, CoroutineScope {
     val impl: Bot
         get() = implBot
     override val implGetter: () -> Bot = { impl }
@@ -106,6 +108,9 @@ internal class BotWrapper private constructor(
         if (data.message.isEmpty()) return null
         return OnebotMessages.toMiraiMessage(data.isJsonMessage, data.message, this)
     }
+
+    override val onebotData: String
+        get() = gson.toJson(loginInfo)
     override val id: Long
         get() = loginInfo.userId
 
diff --git a/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/FriendWrapper.kt b/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/FriendWrapper.kt
index 611f232f..b198163b 100644
--- a/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/FriendWrapper.kt
+++ b/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/FriendWrapper.kt
@@ -2,6 +2,7 @@
 package top.mrxiaom.overflow.internal.contact
 
 import cn.evolvefield.onebot.sdk.response.contact.FriendInfoResp
+import cn.evolvefield.onebot.sdk.util.gson
 import kotlinx.coroutines.CoroutineName
 import net.mamoe.mirai.contact.Friend
 import net.mamoe.mirai.contact.friendgroup.FriendGroup
@@ -17,6 +18,7 @@ import net.mamoe.mirai.utils.MiraiInternalApi
 import net.mamoe.mirai.utils.currentTimeSeconds
 import top.mrxiaom.overflow.Overflow
 import top.mrxiaom.overflow.OverflowAPI
+import top.mrxiaom.overflow.contact.RemoteUser
 import top.mrxiaom.overflow.internal.message.OnebotMessages
 import top.mrxiaom.overflow.internal.message.OnebotMessages.findForwardMessage
 import top.mrxiaom.overflow.internal.message.data.OutgoingSource
@@ -28,7 +30,9 @@ import kotlin.coroutines.CoroutineContext
 internal class FriendWrapper(
     override val bot: BotWrapper,
     internal var impl: FriendInfoResp,
-) : Friend {
+) : Friend, RemoteUser {
+    override val onebotData: String
+        get() = gson.toJson(impl)
     override val id: Long = impl.userId
     override val nick: String = impl.nickname
     override val coroutineContext: CoroutineContext = CoroutineName("(Bot/${bot.id})Friend/$id")
diff --git a/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/GroupWrapper.kt b/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/GroupWrapper.kt
index c9ae7940..6aba4d08 100644
--- a/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/GroupWrapper.kt
+++ b/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/GroupWrapper.kt
@@ -4,6 +4,7 @@ package top.mrxiaom.overflow.internal.contact
 import cn.evolvefield.onebot.sdk.entity.Anonymous
 import cn.evolvefield.onebot.sdk.response.group.GroupInfoResp
 import cn.evolvefield.onebot.sdk.response.group.GroupMemberInfoResp
+import cn.evolvefield.onebot.sdk.util.gson
 import kotlinx.coroutines.CoroutineName
 import kotlinx.coroutines.runBlocking
 import me.him188.kotlin.jvm.blocking.bridge.JvmBlockingBridge
@@ -22,6 +23,7 @@ import net.mamoe.mirai.utils.MiraiInternalApi
 import net.mamoe.mirai.utils.currentTimeSeconds
 import top.mrxiaom.overflow.Overflow
 import top.mrxiaom.overflow.contact.RemoteGroup
+import top.mrxiaom.overflow.contact.RemoteUser
 import top.mrxiaom.overflow.contact.Updatable
 import top.mrxiaom.overflow.internal.contact.data.*
 import top.mrxiaom.overflow.internal.contact.data.AnnouncementsWrapper.Companion.fetchAnnouncements
@@ -41,7 +43,9 @@ import kotlin.coroutines.CoroutineContext
 internal class GroupWrapper(
     override val bot: BotWrapper,
     internal var impl: GroupInfoResp
-) : Group, RemoteGroup, Updatable {
+) : Group, RemoteGroup, RemoteUser, Updatable {
+    override val onebotData: String
+        get() = gson.toJson(impl)
     private var membersInternal: ContactList<MemberWrapper>? = null
     private var anonymousInternal: HashMap<String, AnonymousMemberWrapper> = hashMapOf()
 
diff --git a/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/MemberWrapper.kt b/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/MemberWrapper.kt
index 939e3659..cfcfb59b 100644
--- a/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/MemberWrapper.kt
+++ b/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/MemberWrapper.kt
@@ -3,6 +3,7 @@ package top.mrxiaom.overflow.internal.contact
 
 import cn.evolvefield.onebot.sdk.entity.Anonymous
 import cn.evolvefield.onebot.sdk.response.group.GroupMemberInfoResp
+import cn.evolvefield.onebot.sdk.util.gson
 import kotlinx.coroutines.CoroutineName
 import kotlinx.coroutines.launch
 import net.mamoe.mirai.contact.*
@@ -19,6 +20,7 @@ import net.mamoe.mirai.utils.ExternalResource
 import net.mamoe.mirai.utils.MiraiInternalApi
 import net.mamoe.mirai.utils.currentTimeSeconds
 import top.mrxiaom.overflow.Overflow
+import top.mrxiaom.overflow.contact.RemoteUser
 import top.mrxiaom.overflow.contact.Updatable
 import top.mrxiaom.overflow.internal.check
 import top.mrxiaom.overflow.internal.contact.data.EmptyMemberActive
@@ -36,7 +38,9 @@ import kotlin.coroutines.CoroutineContext
 internal class MemberWrapper(
     override val group: GroupWrapper,
     internal var impl: GroupMemberInfoResp
-) : NormalMember, Updatable {
+) : NormalMember, RemoteUser, Updatable {
+    override val onebotData: String
+        get() = gson.toJson(impl)
     override val bot: BotWrapper = group.bot
     val data: GroupMemberInfoResp
         get() = impl
diff --git a/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/OtherClientWrapper.kt b/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/OtherClientWrapper.kt
index ded241df..93f2414a 100644
--- a/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/OtherClientWrapper.kt
+++ b/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/OtherClientWrapper.kt
@@ -1,11 +1,13 @@
 @file:Suppress("INVISIBLE_MEMBER", "INVISIBLE_REFERENCE")
 package top.mrxiaom.overflow.internal.contact
 
+import cn.evolvefield.onebot.sdk.util.gson
 import kotlinx.coroutines.CoroutineName
 import net.mamoe.mirai.contact.OtherClient
 import net.mamoe.mirai.contact.OtherClientInfo
 import net.mamoe.mirai.message.data.ShortVideo
 import net.mamoe.mirai.utils.ExternalResource
+import top.mrxiaom.overflow.contact.RemoteUser
 import top.mrxiaom.overflow.internal.message.OnebotMessages
 import top.mrxiaom.overflow.spi.FileService
 import kotlin.coroutines.CoroutineContext
@@ -13,7 +15,9 @@ import kotlin.coroutines.CoroutineContext
 internal class OtherClientWrapper(
     override val bot: BotWrapper,
     override var info: OtherClientInfo
-) : OtherClient {
+) : OtherClient, RemoteUser {
+    override val onebotData: String
+        get() = gson.toJson(info)
     override val coroutineContext: CoroutineContext = CoroutineName("(Bot/${bot.id})OtherClient/${info.deviceKind}")
 
     override suspend fun uploadShortVideo(
diff --git a/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/StrangerWrapper.kt b/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/StrangerWrapper.kt
index f6d70c63..41f4d261 100644
--- a/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/StrangerWrapper.kt
+++ b/overflow-core/src/main/kotlin/top/mrxiaom/overflow/internal/contact/StrangerWrapper.kt
@@ -2,6 +2,7 @@
 package top.mrxiaom.overflow.internal.contact
 
 import cn.evolvefield.onebot.sdk.response.contact.StrangerInfoResp
+import cn.evolvefield.onebot.sdk.util.gson
 import kotlinx.coroutines.CoroutineName
 import net.mamoe.mirai.contact.Stranger
 import net.mamoe.mirai.event.broadcast
@@ -18,6 +19,7 @@ import net.mamoe.mirai.utils.MiraiInternalApi
 import net.mamoe.mirai.utils.currentTimeSeconds
 import top.mrxiaom.overflow.Overflow
 import top.mrxiaom.overflow.OverflowAPI
+import top.mrxiaom.overflow.contact.RemoteUser
 import top.mrxiaom.overflow.internal.message.OnebotMessages
 import top.mrxiaom.overflow.internal.message.OnebotMessages.findForwardMessage
 import top.mrxiaom.overflow.internal.message.data.OutgoingSource
@@ -29,7 +31,9 @@ import kotlin.coroutines.CoroutineContext
 internal class StrangerWrapper(
     override val bot: BotWrapper,
     internal var impl: StrangerInfoResp,
-) : Stranger {
+) : Stranger, RemoteUser {
+    override val onebotData: String
+        get() = gson.toJson(impl)
     override val id: Long = impl.userId
     override val nick: String = impl.nickname
     override val coroutineContext: CoroutineContext = CoroutineName("(Bot/${bot.id})Stranger/$id")