{
  "manageEntity": {
    "action": "Update",
    "entityId": "391333792",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf2ea810f6ebbc873ab87eda2f7638ff673b4c0733eb9f525fa0371cf788db6bb",
    "signature": "0x228963a653f93b9edbbbb8eefb47023ed75c3e7e7049f4cd3b6d8a04f245c65d00f4c9c8ce8b64449a7496e39888aee7ecd5020fb68a1ba8776a8cfd1eafd91b1b",
    "signer": "0xe58F2D8128273F34a65a7d2cA9D026e70185D1AF",
    "userId": "391333792"
  }
}