{
  "manageEntity": {
    "action": "Save",
    "entityId": "2126883747",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x20ae38ad39ed6c7dcf070837f97c399b5dc02fb58a16af38ddbd261bc0ba6c5b",
    "signature": "0x1f3667dbbb50f69c6b53031cd32733f2f6aa97391c583305660f0702784df74e62f09f883e096100178bb7212638ba76bfa4b04c6cd0de9bfcbef6e69e8777a61c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}