{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x258621edd006c4e4a7d62f05de061eda3fba7d37c9da566b71ccad5d23076c78",
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    "signer": "0xe7C52e9b13a79d2ec04B0A3E3053850A2A7B68C4",
    "userId": "831708899"
  }
}