{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x75846e79dfd478b45b39db275255056d5b40d217419739a085d2500cb47be2ca",
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    "signer": "0xAEd2fbBA4753ccDE0cb4EFC1b29D16d6FBD83343",
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}