{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x888af9e50f1018f7c9bdb46995e3da4b7d33bd01b0f1b1169ff81b49244e6d5f",
    "signature": "0xdc0688d4397bfbadf11ba4f9dc8e7044f4c6821e9d78d96132230c2208f72cae208535cd26b62e1349d49b753bafa9d8694a6850e418a14fa87c1c9df099a9a41b",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}