{
  "manageEntity": {
    "action": "Update",
    "entityId": "745218801",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3d4fca926cd197cfda838d322151fd33ea58b91ff341cba063d54317066e6ee1",
    "signature": "0x3cb7d31b68f3383e9d4453b914adbdd0283c9e0d545ca576b247f69b5f14dcc8106524dab88e83a7fb5053b0cd630890e857da26787f75368f8d648959976f5e1b",
    "signer": "0xBDB0D4b954b76aa82E858272129d43b54aa159f2",
    "userId": "745218801"
  }
}