{
  "manageEntity": {
    "action": "Save",
    "entityId": "1459873244",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xaedefd76f0c78e939225e54ffa0acdd4966343b14b2a30f9c34609e7e581a281",
    "signature": "0xd1eca024c82d22786e859484fa8031f9dc4818c81e94fdd516b9b95e735e7375495f1566e81ddf22a9ddef27eb9902713984e07b2ab5dbd3051bfe0da9047c781c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}