{
  "manageEntity": {
    "action": "Save",
    "entityId": "981899711",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x36470ba23dd2a4bb8334a7cc6379c07f022948ee3b0c2cb6587f59f0795b7234",
    "signature": "0x5cf5a7a1a13c08afb7aaa9e2f3ee26a1b0a6f52d0395a1ba5ba39fefb175e6c301db7d79ee2d5692916ca1a823867df9e5d3f68041543821d51b23a20f8a1b291c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}