{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4504d0bffe16d7eb045d9a36b9048e9a50d96f40f76ff42c091951b2540e5754",
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    "signer": "0x0240b396796806d3154e6775A06a3b5587320DA7",
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}