{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8c5029a0f3e0cc933d9054ffa06756f6dc9d0721aa82ceaaad115a875e5a39be",
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    "signer": "0x7Ea9594EaD41B11D4538eeD615550Ee3A0D88A5a",
    "userId": "809897082"
  }
}