{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2cded0facc29916fa39b0759715ca45f493fa491bbb8c606570663e13d15d69d",
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    "signer": "0xbc0b2a8CEf31c47F34175F42C8DFe1B4f4961F80",
    "userId": "727853425"
  }
}