{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb177df5298bb2c7b26de913bee293a0c497bb5be9382e613df315b857f3ac26b",
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    "signer": "0x04776FDD97df04340480e75C0DC68Cd805F19DE7",
    "userId": "713691257"
  }
}