{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb29614fbf8c2824ccfa9ee97871f550d088f7f9aea3808602a8b0210df0ecc11",
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    "signer": "0x3bAe7FBBDF8d827cA57cA83ea8B4D01E688B6100",
    "userId": "931211750"
  }
}