{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6bb39fa21124d849d799433fa1b7cf97d66362ecc13ac77baa5f800f2105adc9",
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    "signer": "0x607C0B504B1190F4Fa45D4712D4449C62F7224E7",
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  }
}