{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6438dd122bd4e3fa2fb9a2d1004caf080fd770915a36f8c1551a0eaddb1cac63",
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    "signer": "0xfbf237a9ede64d2D31C8AcAa0b15633A26555989",
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}