{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2571a12d3ca2283e8be4696d667216c1489e341e27b4e4d094c7a10ec5cc52e5",
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    "signer": "0xd756f61E9CBfC17332D0a1830a7F7Cae556b9863",
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}