{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2850318ee18e4e6288bdd0b0501fa4167ef6424f3375f5bf5f99e4a76853f778",
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    "signer": "0xf0F491bE628c3A5BF3904d1Ae68bc59234407951",
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}