{
"manageEntity": {
"action": "Save",
"entityId": "4281",
"entityType": "Playlist",
"metadata": "{\"is_save_of_repost\":false}",
"nonce": "0x6b90fce385419fed75b4ae11aea9eaaebcfde5862ccebcd4bf8c011fa846a38b",
"signature": "0x820fbde7afffcff45eef2fed85ca98e12740c5683dfc34348631ef67c21c2f7461817d6dc8f95b9c3117f87cba87ea4cbd37a6097c41e5562715be25e844cbff1c",
"signer": "0xB842FA6ec690c0E1DCFF4AD585749351F1302898",
"userId": "28297873"
}
}