{
  "manageEntity": {
    "action": "Update",
    "entityId": "3636854",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieranialv6fdxvwp5gbndswcvikmo2skh257fhoj6xi7mvbvng55snya\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1369700879},{\"type\":\"playlist\",\"playlist_id\":1136421125},{\"type\":\"playlist\",\"playlist_id\":1100363087}]}}}",
    "nonce": "0x7f648eed5c971a9a062513b33449f7775085bf0c07662b4743fc6546d0573f83",
    "signature": "0xce1f3ca0198a2882bfc5f9dd8eeffc34d6245ab333e1ff64f79a11cb79ba325b6655811fcea9299aba90640d98f9fe06ffefef0a91d96344121b2f3439fc8bab1b",
    "signer": "0x2e9d3CE541fF1290944eF388dE9759d77881dA4a",
    "userId": "3636854"
  }
}