{
  "manageEntity": {
    "action": "Update",
    "entityId": "469579468",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierackeqfxmizoswe67tnjcaeynklekyimkb7rrq2fjianyhokmesnkq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":149324705},{\"type\":\"playlist\",\"playlist_id\":1150176626}]}}}",
    "nonce": "0xa9a7102c5cb2c0f52589a3dbeecb6810db9c7cd9034e007e9aa962ab4ea6d0ca",
    "signature": "0x56dcef0cf59863baef3ac9ab76d8aa2df738482ddcc5d36d2aa1b52b2bd04a9427c175952c1f54b5ced6f6de0b9e13ae8ffb35787c78a08ec9343c263b5250bb1c",
    "signer": "0x3BB23849430ADEf1350487E3011D5Bee89331743",
    "userId": "469579468"
  }
}