{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7c453be40c54d221351fa1ba74c23504691cc3280d05fa086891c3d7dcb6cb80",
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    "signer": "0x9e591CC0bd57b7f77f15a3B1b7e8347ecE22f0eC",
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}