{
  "manageEntity": {
    "action": "Update",
    "entityId": "823541067",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3ed9ce96b9ec4703d006499b4fabff603634ccfb82790cd3705f36cdcb640bb4",
    "signature": "0x97a9fdba07bc4d1ec4492bea2765e1195f666beb7c33c19c89d1c64cb5ab59272c01710fb34578f75dd6ef3ef1a9d638f380ebcc7100f79324c377c9e92096571c",
    "signer": "0x3a60721a21f3BDbd14c4453F35a557c3722Eb856",
    "userId": "823541067"
  }
}