{
  "manageEntity": {
    "action": "Update",
    "entityId": "1288105426",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_contents\":[]}}",
    "nonce": "1780850140041281612",
    "signature": "0xa18c62fae628d2cd5a803e0ae398e95808b178988f461ecde78f85c1b8902d6c6503665f8bd4af2d1ce2ec95afa4fbebf938f1fd2a7e3ef04f1ecf2f5b22f9901b",
    "signer": "0x286E7ad8f9447D0112953Bdb1684A4b4192ECb76",
    "userId": "210545"
  }
}