{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9997186e2cfe74f5cbcd309fb7a7b9e5e3d6a240e5b986714714afbea35c8464",
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    "signer": "0xa557Adde8983647D526D2B3301308bBbCf277d07",
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}