{
  "manageEntity": {
    "action": "Update",
    "entityId": "383560128",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa6dd6bb3dca1d863de3f23642733b8da4a02325df6b089c6bebd9c36c35bf626",
    "signature": "0x2163773cc98d7cf587c5b351f352abd75ec2b3b657bdd8a3cf509dee068f7d711070b9c91beb72fd2ba97593b20b446fcb4ee1bf0c68cf46525b69bf725895831c",
    "signer": "0x785343dcc008938B9B79e332EF016228A546dB33",
    "userId": "383560128"
  }
}