{
  "manageEntity": {
    "action": "Update",
    "entityId": "145118561",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraje5g4gcqnkulgt5pf3wdwwtvl6wzih4pqagh35j6oiflhumjfihq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":30469}]}}}",
    "nonce": "0x564f7d1a16bb751b835a029330e0520c54739f5fd3a0ecfd36bb3d41990c652f",
    "signature": "0xa23756a187fb08dbe211e4ff90372f55132c2f93f37d462d69c7ef670c854a9321cbf787c78f986cf90b7760d2ba383a1783b2c3ffad59e777e0cee49cbccd201b",
    "signer": "0x1611c64c5C0b22332A4fee8bceFDB96dE3a5d7D9",
    "userId": "145118561"
  }
}