{
  "manageEntity": {
    "action": "Update",
    "entityId": "138691010",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraehjkvfxrwlcinz6lt3ydfeb3gsyhhtqmsi27btj7kxta75epm45q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1662636146}]}}}",
    "nonce": "0xea96b29e0b1ab97b3e54258d03afe0f701080c822270219f1afae39530c32ecf",
    "signature": "0x11e114a1d47b9ff93ffb5824822f6816cacffa5f868717eb42f5d9484398b75e01024b8b8cb96654cece2b45017d676978d3557085a3286c1d5a56643a6d9a821b",
    "signer": "0xBdEDA9FCB76346C79650651637D11Fa62F197564",
    "userId": "138691010"
  }
}