{
  "manageEntity": {
    "action": "Save",
    "entityId": "766408660",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4cd7507e9e93c6fb6bdc770c7136472e22ff87409f8df65a906cbe11175b48e1",
    "signature": "0x2f7d965e315ead1132190458f7594fa2da5ed4d3962ee1297fa8cbd409719c3b310a0fae7e4df1eb8d8a71bff8272a2418986fed0ea10e6bee655fffa9feb4c11c",
    "signer": "0xc67c19E4F23845b9fC14753aC38310a6a521c2E3",
    "userId": "595930257"
  }
}