{
  "manageEntity": {
    "action": "Update",
    "entityId": "43754840",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierabfz6pa6qjj2psu2mripvreeft5gt3zo5zgab3powds2ajsu46rga\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":286830119}]}}}",
    "nonce": "0x34cc2d8705e4e3261c7d7dc54808f057d684df2f46e1d9ea274ed86d6e313b6e",
    "signature": "0x991289827515203a36d158e4dd8504389de13eef12b629a9d46e7de3afb69b521f638e32ea0fbc24e1d94bf88a5fc0ee1abdbe6b3f6424f42ee7a11d5fb168e41b",
    "signer": "0x6409f2D99228Fee0405Ccf5572802befaCd890f2",
    "userId": "43754840"
  }
}