{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5e809017beec5af011fd6c12206e55fb1b0c88e2e29208c40cfae65cc8ea1012",
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    "signer": "0xAaC345b281936C4DbF475199566cD620F4e69920",
    "userId": "64989989"
  }
}