{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5dad3ba24abe423ba057cdfae79c828cf506f92799f4488fb8bff075d5e663e3",
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    "signer": "0x96e9FcB3bcf2B4B9B7347B5ba96A6a8813527DE8",
    "userId": "319177310"
  }
}