{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x70bfa09d958ac2c32e47fe50fda05f7e239a5277dcf9afb1923706b744a173ec",
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    "signer": "0x95ED6210bdAfED00EC735e9f4265e4275E02391A",
    "userId": "590248799"
  }
}