{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5c773ba3a58d5f80cefd47154748720de71d50249db5482b8b0b4084d20bd912",
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    "signer": "0x7CE1e2c76Da56C8F42ac953E7ff7c7F082799d93",
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  }
}