{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x23ebc77f129f8cf486a55db984205ade8b77913bee885157fb12f30b3e9ec788",
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    "signer": "0x91487a66bA5EbEC76Ed9068CA647A683216Bab55",
    "userId": "246269693"
  }
}