{
  "manageEntity": {
    "action": "Update",
    "entityId": "428941685",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5df187a5d4d3f5df1e1d65ccb42289cece348ad7d527402badcf6e06ad731cef",
    "signature": "0xc8303d2d3105bfd8390515725d552a02e4d9c72de61c9976c7803f784ac46ca720595fa0bbc3682320c176fb8ece178ab95c1445de4a0f3a6f147c75157c415a1b",
    "signer": "0x9acF8CBE8f2B0d51e756C58D6d1f946A8757602F",
    "userId": "428941685"
  }
}