{
  "manageEntity": {
    "action": "Update",
    "entityId": "159075806",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x39c00db60613ee3a5691bd99617f2cd5820025d056c0d5fa8e492a9b36a059cf",
    "signature": "0x8f6d6e5930089ebd1de5ca35a1d5df12a7097e4c5cda621955a78f21da7350e436200e70ec1c23dcf5d4e1aa4d4dca2c3e29fca22b4f5592c5278cfba4ffeacb1c",
    "signer": "0x53ED6f5d2bc122Bdf52f337889e062520b877104",
    "userId": "159075806"
  }
}