{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4f26227eba8afb6eb5f3d318adeae5ee67da8bd217fb3331e46c747d90640bc7",
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    "signer": "0x594d79756bF4fA4c6950fAA89479781792F6e656",
    "userId": "298948042"
  }
}