{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x15432e07d74737422d060698424752b8a235223f13834255f3b5d0772e1404ae",
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    "signer": "0xAd8B2B9eD01775f6c434EFcB4A70540b624dAeD9",
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}