diff --git a/src/api/betting/models.rs b/src/api/betting/models.rs
index 31fd32b..353da34 100644
--- a/src/api/betting/models.rs
+++ b/src/api/betting/models.rs
@@ -36,7 +36,8 @@ pub struct Betting {
   #[serde(rename = "groupKey")]
   pub group_key: Option<String>,
   /// 게임 데이터
-  pub detail: Option<serde_json::Value>,
+  #[serde(skip_deserializing)]
+  pub detail: Option<String>,
   /// 보너스 여부
   #[serde(rename = "isBonus")]
   pub is_bonus: bool,
diff --git a/src/api/member_account/api.rs b/src/api/member_account/api.rs
index a54a63a..f23c427 100644
--- a/src/api/member_account/api.rs
+++ b/src/api/member_account/api.rs
@@ -69,17 +69,7 @@ impl Api {
           let balance = r.balance.unwrap_or(0.00);
           let balance_bota = r.balance_bota.unwrap_or(0.00);
           let balance_sum = r.balance_sum.unwrap_or(0.00);
-          let companies = match r.companies {
-            Some(v) => {
-              let vv = serde_json::from_value::<String>(v).map_err(|e| Error {
-                code: -1,
-                msg: Some(e.to_string()),
-              })?;
-
-              Some(vv)
-            }
-            None => None,
-          };
+          let companies = r.companies;
 
           Ok(models::GetBalanceForUserResponse {
             balance,
diff --git a/src/api/member_account/models.rs b/src/api/member_account/models.rs
index f977f31..4c164f7 100644
--- a/src/api/member_account/models.rs
+++ b/src/api/member_account/models.rs
@@ -13,7 +13,8 @@ pub struct _GetBalanceForUserResponse {
   pub balance_bota: Option<f64>,
   #[serde(rename = "balanceSum")]
   pub balance_sum: Option<f64>,
-  pub companies: Option<serde_json::Value>,
+  #[serde(skip_deserializing)]
+  pub companies: Option<String>,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
diff --git a/src/synchronizations/betting_history/synchronizer.rs b/src/synchronizations/betting_history/synchronizer.rs
index 64e34ba..8f87c1d 100644
--- a/src/synchronizations/betting_history/synchronizer.rs
+++ b/src/synchronizations/betting_history/synchronizer.rs
@@ -137,17 +137,7 @@ impl Synchronizer {
             });
           }
         };
-        let detail = match b.detail {
-          Some(v) => {
-            let vv = serde_json::from_value::<String>(v).map_err(|e| api::core::models::Error {
-              code: -1,
-              msg: Some(format!("serde_json::from_value error: {}", e)),
-            })?;
-
-            Some(vv)
-          }
-          None => None,
-        };
+        let detail = b.detail;
 
         new_betting_history.push(repositories::betting_history::models::NewBettingHistory {
           id: b._id,