{
  "manageEntity": {
    "action": "Update",
    "entityId": "522902911",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieravl4bgey64obmu54g7twja5edd7zssa5hz6e4uyb7vpm5hbvprr7a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":555408497},{\"type\":\"playlist\",\"playlist_id\":1748811053}]}}}",
    "nonce": "0xa02b95d5b3a98316cd073d129c3d5289c9d8718e7358c43902c74831ab66d646",
    "signature": "0xe061e03c41f95582bf8a982b435dd27f8212479e18151458495e65a5073b5fea2bc0dd1757e948e8a4601b95326335c063c02886cd7acf4fa69e5db2d90c3e8d1c",
    "signer": "0x064F47ceA1BD6c7f4E75eEaF6208Ca039d0c2D01",
    "userId": "522902911"
  }
}