{
  "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": "0x6012adde438fa020f84606f19a77cd5e5567bdf0dae7777c6e902a06faa8bc20",
    "signature": "0xf603d392724d797affe9d04e401e6fe16e053f5c92a799a7f95eae15652c4d120f6caee85aa4f9cdd3d5262bb80edb585ce8eb13f7e7a08ac38064ad502a08e11b",
    "signer": "0x61dBa7595A973b4e5dFDf3d692FADa360d015640",
    "userId": "900057687"
  }
}