{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8368d79fa383ffd84b314ba48db38f824e50fae0bb02e6bd73c921992969b8b7",
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    "signer": "0x584af568959cbfE3938a06FaC2926eB0A92a70f4",
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}