{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xce20e59ca89c114db5c27018772e0b855a2bd1ed82cb679f7f0025ed4e9760f7",
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    "signer": "0xFa4190a6C682aEF67fAf91B437CfC23C663a9C38",
    "userId": "97982287"
  }
}