{
  "manageEntity": {
    "action": "Update",
    "entityId": "666964391",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfa26d652a6794797d9fabfedfcd7287f38402cb07f2b520edf6d100ce0b42966",
    "signature": "0x568247a7c64577967960c528fa4bf9e4f2ad3e52063cc85faa0c45896ff85f85069a17f302fccc942780518422ca59a590735b9b8e57c9a0f6b19b11c8f3ae841b",
    "signer": "0x1369a4A040e641C0584EC5255caBBaB0b4cee85c",
    "userId": "666964391"
  }
}