{
"manageEntity": {
"action": "Save",
"entityId": "4281",
"entityType": "Playlist",
"metadata": "{\"is_save_of_repost\":false}",
"nonce": "0x0a75d6302de3827c3eca3b945830560161607ceec192fe6bfb9824a0f0caf9a3",
"signature": "0xb9198d5caf4af01f90d45ff7672d9a438ef0e20d608fb776d0e29153f0e35a96688ceafaeb15aff21ebc8aed228487d0b2fafa0964d1ef0aff4680d05d1b88841b",
"signer": "0xFb9294627fb41f72bDfDECC8f54CfA5d6aC07098",
"userId": "583146995"
}
}