{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x26aca5946082e7a2413f8c72a888f406249374ff88c4daf27bc1f4e6f514cce3",
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    "signer": "0x46CfB51Fda6B1829B8aF13F7d99133767B3F3b17",
    "userId": "467398673"
  }
}