{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x145c53d907094ec8a3b745c2a26db33a1902f65a9095fcccb8189b1249cb9a26",
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    "signer": "0x23099Fdc410174A7140B5df3f00d4a4De6EF5Aa5",
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}