{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7a4d0138aa14fd6a97964ffa259c71f3918a990e85806ed951b107dd4d4a5ee7",
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    "signer": "0x40BfC75ec48613C1dB29f34F153f5e1c82E8D833",
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  }
}