{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8d9fbb5e197502bf450c83669aed7340e0a2fd995c8ebcf5e9ea809527f38214",
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    "signer": "0xF3Fb0396BDdA45046c86113667F3270fC128A73d",
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}