{
  "manageEntity": {
    "action": "Update",
    "entityId": "921777960",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratoxbeggo3dqk2zwtxzzpmpwmr5xsk77vvwnaz5lffrwbgqycxdha\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1169131167}]}}}",
    "nonce": "0xbab8a44e52fc733a1f87e0fa44d6224cc2722ba84b92afe84800ed7ef356546e",
    "signature": "0xeeb750be0a87d80472e74580e730ffc60a0b71dd452630f8c7295ef58c2883de1766aa3b51bd0e12d13ca2ee4330ad48c66018b57a207e8977dde10e3ebbc2eb1c",
    "signer": "0x1e790323192cc7A6755829dBa7Fd3D0870FF3826",
    "userId": "921777960"
  }
}