{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x311664fe50318d4f2cc5eb04aeb8b2e06295bebe00e76060aab713e23b9a5f34",
    "signature": "0x63ea69c78e77128800def16e2a11567bc5d213d3535074301d469486277f3d2f6833cd8a3b4b5f6854976fa9bfb406080b4dfa1b96e81e8f4292abc18a666e9c1b",
    "signer": "0x5Fe9be9F3B35324597BBC496F73e434241157E69",
    "userId": "695846134"
  }
}