{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc09681b8dafb4724f7a61ab6d73ec03f453954b70e1a4392be468057d26fc8f4",
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    "signer": "0x60B9057eF652D103BD7D66F68F81078E7DE68Dab",
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}