{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x97a4b6236e50764657f62834cd78d2acbb117c58b670aa0f5901c3664381fe8e",
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    "signer": "0x3bD12ab58a07034ab7308b8f86855705f53062E6",
    "userId": "876060179"
  }
}