{
  "manageEntity": {
    "action": "Update",
    "entityId": "120813031",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x17ee5db631b385a949ad0418f4bc5e8597dab0e31affe9a3ca4dcb262b827fae",
    "signature": "0xf2f035fdf5469114a573e4093ac8873b67a1d87ad17208b7c37b6b5485a245407f8d20085db6c6e108a585bf0c15f844f9361f319fdacd91369103b40c5268c31c",
    "signer": "0xf0363d75BCaDb7C724ba62e767EAeb6caA5281D3",
    "userId": "120813031"
  }
}