{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x51220192a95137fe1e2b4703f8b32347fcfbb42805f65c9966d813ee7c9c43d4",
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    "signer": "0xb01c5940A767EA1A89Fdf69996402FA78af1FB7b",
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}