{
"manageEntity": {
"action": "Save",
"entityId": "4281",
"entityType": "Playlist",
"metadata": "{\"is_save_of_repost\":false}",
"nonce": "0xccefa6c19aeb21acb8804b938e432097d51a00f05226670adbbfe246126f4754",
"signature": "0xa71293b5e0ac7d7f031638a6184a18d8eb0a7abf0d73bc2a587048ec7e015f3f7943408a4d386dc2fb0429df3213e19ccb1b8dc83a82951b9c96455e6dad82621c",
"signer": "0x4dC20D77e505d1657d39Cf0544bB81A6B4790185",
"userId": "891356089"
}
}