{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb2e326205ff3a504693819a638b32a6092fa03e74be9cb4dca32a6d3a415d0b5",
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    "signer": "0x0E6e271B4E5DFa722E4216DcD4A162eF7A059946",
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}