{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7a501975f7d8ec78f62fa8c3c351a17fffdd68bdc727719c44f6edb6d33b9ca0",
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    "signer": "0x96cF9992C71A76d6140b5a183519e39a865bC5A0",
    "userId": "937933265"
  }
}