{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7a47d735baa51157e82fb5c82b46dd9c688a96247ecd58432808bb43c4fc3455",
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    "signer": "0x359c0073aA18FeB5af105AB505631fc703121Ab9",
    "userId": "800879796"
  }
}