{
  "manageEntity": {
    "action": "Update",
    "entityId": "54867432",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe23890d3440c4b771aa0ec5806811266fdc8ad14ef22368b2459d4f137bb2102",
    "signature": "0x65a06cf3075da0db1e00a703259cafed9476a4a997481c70a9f2cbf4c4e255575c1922d9857c5f5483ec3db31452ddfe70e2899a7863b25fe687e8abe39c3a101c",
    "signer": "0xc504f145DDc6571520cf69963fE6ABa48DC1E776",
    "userId": "54867432"
  }
}