{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x790644ef8b3f43a2dca7213109670476e6ae5f318a1a899c92c2947f01207f90",
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    "signer": "0xc3cd8d00194d20Fc35704508Bbe2386080a86aE4",
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}