{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc805f50f09f84b846d2ab2977c3945c80f3ea0bcd1de8922c032c0643f09dc53",
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    "signer": "0x0331a93703Fa8bc02EB89B46Fb13a9840a597d03",
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}