{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa8bffd8dbf413bff599b7707fb70ff129de808a3af8d02ec6a30fce4ce33bd12",
    "signature": "0xbe1b8d91e7af5b79c101dedadd9e070fbadda47d6322b4b237e2d4ba879dae3034ea1798e4b9c321c24de5556658fb94074f86d7d8df277f36e004b171ad4bfa1c",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}