{
  "manageEntity": {
    "action": "Update",
    "entityId": "449077915",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8061d46f977066780e1b5834b81b8dd0ec8a2ed4e304daa3ad4720fe4bf4b167",
    "signature": "0x7bf45e6ae4c8bc20497e32ee30039e171736858955f78a59ffed005553369da700a3fc7bbfce17d8f57375fa45c7cec0c1cf920273b51ea41d2c16477d7ccf601b",
    "signer": "0xd8331bd2c1c12F409a0D8f73FA21a7287E0460d6",
    "userId": "449077915"
  }
}