{
  "manageEntity": {
    "action": "Update",
    "entityId": "211532313",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierax4qwmsqwte3koic4cgjl5tijrch3zdqehknuimwyt3szmxxb7gya\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1136293617}]}}}",
    "nonce": "0xc3ad0d6f56c975eb257fc1ef87c9fbce9658916717ed73651553f8789360736c",
    "signature": "0xddec5a30f4a39233826bbf4ba9873cca28092d8646a4e7465eade1481443b85d7c897e95e6e5ab2f9e51aa0c28991cdb0dd913018fbf92a3ee49f8abdba988881b",
    "signer": "0x493c721c47344C3c5C9fB44bD4576E70CB4Ca70D",
    "userId": "211532313"
  }
}