{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x78809c6204de7dc548326b140fa3d791a27fad19e09eac6732617c25037d906b",
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    "signer": "0x5c0018A404Bc0c2e21DB5D0BeF817dd28ca043c4",
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  }
}