{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc9ccaeffd0833380d55ba6bcd509d390ef304fbed8707d916a4172d7927ff4f4",
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    "signer": "0x70301c1c3af1CA3030C1e9eA4A17366CE9D15676",
    "userId": "649149786"
  }
}