{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6679f47694f25878ffebf4535546ac524638f9e6ac6782ae8e7ac52fc3ff6b7a",
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    "signer": "0xE8c231ad512795aD387E35581C635FA0a0C4f0cE",
    "userId": "467191896"
  }
}