{
  "manageEntity": {
    "action": "Update",
    "entityId": "820705315",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieravsna37aasrkw56gmkjdqjb4vkidpbnz6s3nmw24g274bnh3bgi2q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":328653074}]}}}",
    "nonce": "0xa1485066fd2926f595eeb9df12564df76af9ec94f99f12d4dc4b19954a389f5f",
    "signature": "0xf6d4191000d71711beec26c40e0719cff0b94e34daf0cbced34c18179bd890c431bc194792af49c08af5812d90ca52ea6ddfee0a65d60f3a18ac2d511f3cd5ed1c",
    "signer": "0x3a6d9Afe6CDd1C057eD5C1A8d504E6F956675D35",
    "userId": "820705315"
  }
}