{
  "manageEntity": {
    "action": "Update",
    "entityId": "660383724",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieravfwibkro7gd4nxoxfic5aapmvpopfjhuldw3nvvmdp2mukpkhbva\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":297226951},{\"type\":\"playlist\",\"playlist_id\":1026221660},{\"type\":\"playlist\",\"playlist_id\":382090680},{\"type\":\"playlist\",\"playlist_id\":163846661}]}}}",
    "nonce": "0x8a0b14eed2c6cb5a68d6a0bf9924056c4f7da6b17dbf5042821207cdefb38008",
    "signature": "0x9b050f7742db8f33997151c6a97d3270b4410873822f0fb1d0e40b85befa795009cbc508a52d7bff3e87ff01f27c10b282795040a60d7da290a00f19cf31482c1b",
    "signer": "0x00d647669c81359f2EC971e6C32649e501394858",
    "userId": "660383724"
  }
}