{
"manageEntity": {
"action": "Save",
"entityId": "520774072",
"entityType": "Playlist",
"metadata": "{\"is_save_of_repost\":false}",
"nonce": "0x9fee73b1fafabe7eb28bfd1db0191fa90b5975a1c64b907efddb7c7e08cb9b62",
"signature": "0x64ee219857a0f45831c35c61d0ebb21e7ef99adf77588f61cc47b4779bb5970d5778fd502a9c9b9aa26d73f80e05033c77a116503c2e125bad9f24f76cc407df1c",
"signer": "0xa82670FA9B885fC5E3790543627F6F4A7A5e6D65",
"userId": "797142451"
}
}