{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x64ebb65391d7b44dc74e9652f6ed6e34af584a9132e5981168ef34af9824676b",
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    "signer": "0x29dD9654B3d2B2A9c85955293Dc665b02B0243AA",
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  }
}