{
  "manageEntity": {
    "action": "Update",
    "entityId": "854828390",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraf4vhvp2lmegq3gdpzusw3ifxrfqulxe4viskyjztnuolfqixcdjq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1833489616},{\"type\":\"playlist\",\"playlist_id\":276942565},{\"type\":\"playlist\",\"playlist_id\":412766138}]}}}",
    "nonce": "0xa06dfc2b1face514512542cec05bd659cc9051736034f04bd0f091efbc8b79a5",
    "signature": "0x5d426ed044be44510f59e587957ca73225018bf1c1c489874d4ae389caa951f7285dbbc29bb1b73442aa0d9888aaaa271add190c1754f4cb60f8167ddecee6bc1c",
    "signer": "0xa8BEF74bDb7cdBA1D7E949228F5112f6af3276b9",
    "userId": "854828390"
  }
}