{
  "manageEntity": {
    "action": "Update",
    "entityId": "129704217",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x19fe8d6574e63b1be4182fd23035f9c10d13db6f8f14caf6135f2ff709aa7cbd",
    "signature": "0x6ea15c2f7ffa8096218e17da512e2f5b2bd1e98105158cb0a70831278b51dac556467435350283e3e6fae7c561b6412fae1521a082b324a2fe0977038eedb7051c",
    "signer": "0x488C70acfD99ce455Baa5a0AC52De85516376179",
    "userId": "129704217"
  }
}