{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdb46acbeb73171fafef8f4215acfad48c59f1ec3ae39b61bdadd1c6a8a890324",
    "signature": "0x2e4e61aa4cd8d274cdb75a7aa9fc4198fbb499872a8a8d58afb5be59a737f11f0955e1a87680bef6c27296ea93652b78977d335fadec9679a9a25924fe41b70d1b",
    "signer": "0x6c6bcd5eF4F7429E694272DB167842cdB39181eF",
    "userId": "355126946"
  }
}