{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1de6fceff61646cc951a4ee37e723533560965a3964fea52d9296e08e5525a81",
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    "signer": "0x9AcBfC881E230200da95BC128EEc72F341a87e0c",
    "userId": "853608877"
  }
}