export default (sequelize, DataTypes) => {
  const rsbuddy = sequelize.define(
    "rsbuddy",
    {
      id: {
        defaultValue: DataTypes.UUIDV1,
        primaryKey: true,
        type: DataTypes.UUID
      },
      ts: {
        allowNull: false,
        type: DataTypes.BIGINT
      },
      buyingPrice: {
        field: "buying_price",
        type: DataTypes.BIGINT
      },
      buyingCompleted: {
        field: "buying_completed",
        type: DataTypes.BIGINT
      },
      sellingPrice: {
        field: "selling_price",
        type: DataTypes.BIGINT
      },
      sellingCompleted: {
        field: "selling_completed",
        type: DataTypes.BIGINT
      },
      overallPrice: {
        field: "overall_price",
        type: DataTypes.BIGINT
      },
      overallCompleted: {
        field: "overall_completed",
        type: DataTypes.BIGINT
      }
    },
    {
      freezeTableName: true,
      indexes: {
        fields: ["item_id"]
      }
    }
  )

  return rsbuddy
}

@@ -927,18 +927,30 @@
 ndexes: 
-%7B%0A
+%5B%0A        %7B%0A  
         
@@ -971,25 +971,35 @@
 _id%22%5D%0A      
-%7D
+  %7D%0A      %5D
 %0A    %7D%0A  )%0A%0A

Add index for item_id field in rsbuddy sequelize model