{
  "manageEntity": {
    "action": "Save",
    "entityId": "1611753158",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2badd069ef97fb1cf69f427e5cc1ce89db92541ad0f71077430aee7765c17b13",
    "signature": "0x8e2013689274b9e737f80e4818702fab98715dbe1f6a4e8e2a84e54d3687f53127ed52278d3515cf1e81cb61f00bb4749884517206f1d4e91f178545f7f1cfb11c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}