{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x294e84bad120aaced8669335f0908f898d91bd703650aa461ace2a4e946e9d2a",
    "signature": "0x36457ee7fb1d27b2aaeaaffae1d89fcd885ff8ce84c8077ee617a3420b1c7b3b6227c71dd69b5b5c568d0d6f710df51190b6552f4639100c2d49b2716290a4df1b",
    "signer": "0x52C54744FeC93B156A460Db7FccF10e22b6FEdf0",
    "userId": "194963084"
  }
}