{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x13d918a50dbeb0757fb20503d609306fb192ee8373b325521794cb2152c87db4",
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    "signer": "0x1CA73A838CfC398A778B038c5889EEC3329093e7",
    "userId": "469555089"
  }
}