{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdc8feb8cec922fcde4dd1eb4fe0c755de94e2887cf4cb84bfb920d3ad2015adf",
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    "signer": "0x245cEbC9574d38Ba138112B36a6ee27cFCF48cBC",
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}