{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x70603eadc6a9112e4518a79e560b21fefbf7925d2505094cf21211b046018a9b",
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    "signer": "0x9A16d974E945A1b74E5064EB00C2731Ba1dB8fF7",
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}