{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x51f0c2c237d56fc6f3be6442035e2520ede8448a1718bdaa668ca39c97dfedc6",
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    "signer": "0x7964a5eF7E9a780013d3886B40ca04443D69588D",
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}