{
  "manageEntity": {
    "action": "Update",
    "entityId": "201440251",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x468b3b89cc7ac20092cb78e7ce954c2b6b37f091e93a545a0e2d648ba65cfb9f",
    "signature": "0xa3028e0c5632945d9f74f8e38516437aeaf6be279ac736e6f4f64a47f6cc2c124c5d8bb71eb76d1aa1fbc92a58491921316804b4bea59625817a832bc2750b211b",
    "signer": "0x71FF041D39FBf54dcB92B8a3b3F30922817Da8cD",
    "userId": "201440251"
  }
}