{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x33233609cfc364b3f178fe42723955025d9e21909a5331b97b331f7b045c7b9d",
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    "signer": "0xBD9000Df880d31C60851f64a5B9B7d8483De896F",
    "userId": "336724155"
  }
}