{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x28d913a6659a0ecab0da984adfd303770544e90b1f29042fd0fdaa0cc8be4620",
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    "signer": "0x64b994B716782D5E615cBc0621118921dACE52E9",
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  }
}