{
  "manageEntity": {
    "action": "Update",
    "entityId": "900057687",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradr2bsxo2sivykjspkg4n44bvvyckrwada77fsxql77hegqyzigkq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1795117483}]}}}",
    "nonce": "0xa925ec5b2bc0a988c076f29d7dd767ad82f0a20cf6d94e49ba03bbd12a230cfd",
    "signature": "0xf1dac596debc0304ad75599d3e832d7cde132869f769eeba3a611e26388ccbc274c407d9e864a6e1f6644a74dd820cd9af860ecfb66bac7017851aae7e5ce6481b",
    "signer": "0x61dBa7595A973b4e5dFDf3d692FADa360d015640",
    "userId": "900057687"
  }
}