{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xca007ac6dd56883de0ccd1338900c288a7226f8786817904a20d0c6a6f6715d8",
    "signature": "0xba28af7c46508fd2149ebdf91528760cfbb6f7a2cd5e3fc2cde83824b0db6bdd7e875d0be990bcf94a98b05a8e71e6d03911d73105c887c7f130a22fec71c2be1b",
    "signer": "0xEECc62AD75B06635D5D94CdAB575501Ff15f1038",
    "userId": "41205938"
  }
}