{
  "manageEntity": {
    "action": "Update",
    "entityId": "290943603",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2a6917c4bef35131c054e7f930d991c2a189fd41f823287a517a3d8012ceb40c",
    "signature": "0x90af6534fa55b7f4aabfa8eddda9fc7d9de201d13944e3f6217457dddc6445d11e59261d6fa8d4cdd2bfedcb7c007f6aca345dca7e3b5b8fb96c9090aa46f4351b",
    "signer": "0xf67B2953DB302efEF7466771Cb8c7e9d442b3706",
    "userId": "290943603"
  }
}