{
  "manageEntity": {
    "action": "Update",
    "entityId": "662243331",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraitdelstdaj4tjrp3vdgbwukt5op4dqmvfwh6tkudqrxvmqi3mfwq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1609954098}]}}}",
    "nonce": "0x90695040561e5a93e1ffeed5f6a7fbbd56857c0f97faec8d6235893090432beb",
    "signature": "0x6204b6d6a4874e7609e1c4eedf9333c106ef30a53301806e2e8475805f57f76551ed3991673eaac13bedf3cc5ce0db04404dc0003ac8bc6026227c691171af161b",
    "signer": "0x51972E0caB5c3f736515C360501d18d4eDa83d0C",
    "userId": "662243331"
  }
}