{
  "manageEntity": {
    "action": "Update",
    "entityId": "138721477",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb68bd98ab4c9ac47bd38d28ea793bbdc392f2d12f7577e39ce147018d4231ebc",
    "signature": "0x96811f9d00c7db67727b696ffe5fcc3a19bc3a3de16b7c4319244131e32a34ba6f4c31001fa51c656cba803af67d422c5174e1b5e364aacfbd0a6c0e27adb47c1b",
    "signer": "0x2737E86462181047fA96EFde30A314D02FA2543b",
    "userId": "138721477"
  }
}