{
  "manageEntity": {
    "action": "Update",
    "entityId": "402172867",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraheng5vq4mwm7rmiyklzhce6vbdbi73wdl2yjgj5ne5xg5l5ekenq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1644422409},{\"type\":\"playlist\",\"playlist_id\":508864602},{\"type\":\"playlist\",\"playlist_id\":1153706514}]}}}",
    "nonce": "0x6592f8a1a931264e06c7ddf2813da879ee617b5d9629da63ee6630e0c1106917",
    "signature": "0xc8de8879a16e6300b99801c070939f316e6007b5990db4348970b5583b93e7737ba9d04f23dee57be8d71986c0671c940bba5a8f3e19c5e574b9c03970def28e1b",
    "signer": "0xf7B86B7134F78bfCa140E59e3a13a697Ad29dD51",
    "userId": "402172867"
  }
}