{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x522d430fa60ae715803d481b06026794130b54c12024c8ba7a7008f5dfd12c5f",
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    "signer": "0x13411c5F55F3ACc440Ad85C778c8d51909bCBf4b",
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  }
}