{
"manageEntity": {
"action": "Save",
"entityId": "4281",
"entityType": "Playlist",
"metadata": "{\"is_save_of_repost\":false}",
"nonce": "0x073e57a945528c31c1a2bfe59a9fb413b2478b301e60cd3ab52c62f2a029627b",
"signature": "0xae4415ec5aaa12c832a7d7ecd272d7829a73c47e8a8893f17c8b1116a1367ab862059d5c14a83ebd0d4cfae66d2165a5fe1e0d8509308011052013bd1135a7591c",
"signer": "0x2578e08e63e9240DedbEB392Be8356ddDBA5Ebea",
"userId": "782603281"
}
}