{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xaaa09d44a298849e69c2ba78fb0ecc81c908c7195b2fe81d68cce58406caa659",
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    "signer": "0x358Da94f2C71F6bCdE7e9De16B2Eda938de80A40",
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}