{
  "manageEntity": {
    "action": "Update",
    "entityId": "916251497",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieram3bnn6wlofg43tgfoti5mfqcorump7cc3polbw7jffn2cyaquqoq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1203846698},{\"type\":\"playlist\",\"playlist_id\":1295983653},{\"type\":\"playlist\",\"playlist_id\":800465991}]}}}",
    "nonce": "0x6f0492fe7b7eff62e143a51b32ad580a6fd5ef4a7585dac0dad5f3e6b8d77210",
    "signature": "0x4c649a760412726fd5b58f40ffcddfec138f7ae3392b0a5730fd3804f385ae8e4a392a658c8e15dcf4ca62caa77c6a1936c303026bfff1d7711d5a610d7e27541c",
    "signer": "0x2a504b213c236DF8aBF36c36EEe6256f57547e02",
    "userId": "916251497"
  }
}