{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x06257b59735e0fd9a956ccb7835c90e0d2c2d6f55640818970172216681d3193",
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    "signer": "0x80B32192ce8F9b3450dBa022af9F0cF2a3Ef0094",
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}