{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x47b86a4885fc29f828552f33d82c5c9d0b3b5f1f1e665ca51395e2a7268a1f2f",
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    "signer": "0x7cd25FB30C9BeaF3A4ee8191d57bB6C598D317CD",
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}