{
  "manageEntity": {
    "action": "Update",
    "entityId": "673773101",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5fd7e44b9cc55125a41cbe7fec4e238e571c3412325aaf458d2e4ea1cf20b0a5",
    "signature": "0xef6231b0876a205fda7e1178a94b3d2d183859b104d7d74df44c2f2cf1495f535412864a6b8803a1da51c77ae8fc72306720cef48062a8b5293b1c5c5df170671b",
    "signer": "0x5Bc05b706D3864d34607f61EB1cb128EEf4453b8",
    "userId": "673773101"
  }
}