{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x58fa3c143e858ca2641cdec782021a25f473967ba136f44ddda88bcaf4b57a7e",
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    "signer": "0x10b1aA99f4d45f4F9480B286ef4D17f24dA48057",
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}