{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x84363973edbf69897d31541c70de99302f1ab70e3e9f958bdc9c6b61016c015b",
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    "signer": "0xBB6Ab1D303cfA3cD5EBDBa3A85F8659EFf443304",
    "userId": "575673547"
  }
}