{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x30d114ed5602fb006679913b09daf6b385bbe29afcb3dddeec3581987de08f54",
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    "signer": "0xe1C88e893DDB47768c2405cC3D937af34112B24E",
    "userId": "993570197"
  }
}