{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x227c6b12e660c35265e2792871d2a424fe09311b8e60b5934c7c9943e6504937",
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    "signer": "0xa4b0C004E92e9260e9BE06181699D14C2B36275c",
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}