{
  "manageEntity": {
    "action": "Update",
    "entityId": "462938931",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaa98ab04e6cd24c080bfa1a5ae0fc61adb74604e62d5bc2812da3fbaacca9925",
    "signature": "0x888654c6e9d64734ebf250edd959cee305d4ce0a313172f344bd848d36375d8369a339dece603c1814e17c8035e9efdf83e3c3b1113854d9eed6cca6d64c9ffb1c",
    "signer": "0xa75F8c939411037e8B9FB16008b227857Cedf0dA",
    "userId": "462938931"
  }
}