{
"manageEntity": {
"action": "Save",
"entityId": "4281",
"entityType": "Playlist",
"metadata": "{\"is_save_of_repost\":false}",
"nonce": "0xef7454b8b895bbe9fceebbb388aa6dde648d84215cf8117a6625735b7f75a8cb",
"signature": "0xe165ca25f3d96c9cae2655010a2dff7e584abb0fd863e82af679eacdbcb3979a5c05c431cebd3e85449384bfa8d0f5c3cd99b9346d9f0c4fdc91151225a3b2e31b",
"signer": "0xD4B6aa97d32CbA3f12da9EfE973129E1E154eD92",
"userId": "824550817"
}
}