{
  "manageEntity": {
    "action": "Update",
    "entityId": "841855424",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x96a56ea1c1d93b3e30f6bcff7cdf2e7a008b647c1336b1d6028bb3433de43839",
    "signature": "0xa1d621eb3b63a95f6b7d8cff87d42d744b930578acba947cef2ebf4d0063fc0f73fdf4a7333fe3e89071bd0175538b3f71781638a897e0f4f051de053c6f786f1c",
    "signer": "0x750d73e4c4cF6221A678C12A353812D356Ce568A",
    "userId": "841855424"
  }
}