{
  "manageEntity": {
    "action": "Save",
    "entityId": "867162311",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe6d3473a7c8c245636de2e477e2e8911bb9fc5773c471a4cf9e96c6fddeeefa4",
    "signature": "0xdba2327443e927f83d7e50f708af9b7141355611cc80c285823c17cfbdabdb5549f40a544883a621fd0dbea2def3708fe86cfa5e399612fd5fce778e59fda6001b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}