{
  "manageEntity": {
    "action": "Update",
    "entityId": "551130365",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraeywhthlbrtxp6inftdlcd4274ag6d2nmfwjsjykqxsrjepawfoda\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":74573721}]}}}",
    "nonce": "0x8992d8bd6f2d94a5180583e0996eaeea7fee7fb45ace15383c0cda089a66b3c4",
    "signature": "0xa605db7388b259e9e267ac7ca57fec76b142106f356a2061c583539b73fc24455ab94bc6630964b4bf751f0938b8f9a32f3ea5de58dab28cb5115deaaa35ac001b",
    "signer": "0xeE668EE089Ee648DE5Ffa964C4832e855f35F0C4",
    "userId": "551130365"
  }
}