{
  "manageEntity": {
    "action": "Update",
    "entityId": "393259142",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaa1e0a78fbcda9f48a5628692a04f7a5a9f8c87e2f4c0baadbe48894d7d0c586",
    "signature": "0x893ac4032fbd0e2ff50604b6f2d05c51f9570005f4a359423a7763b5299a9b0c309bbf656eaa0e8019fc29ca0c8d806a9b08ab5f3d9032b48db991c8394e713e1b",
    "signer": "0x91B0339EB69a613B05022Db1D1cb0a19CB333Bd4",
    "userId": "393259142"
  }
}