{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc11a78021dfb682800d4438e309ae2b20c6262ffaae72816f28f02e409dbf47f",
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    "signer": "0xa4D14E2De7F2f2aD7aa7E9249BC61fcBb5af822e",
    "userId": "747291502"
  }
}