{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcff78226637603c0f29f463189339f90f661708f8df4b1b0a499b4a49d850734",
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    "signer": "0x7dd929d0bCEb82111e9A1f35acdaCc8C3e285831",
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  }
}