{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x25c140717133407b27351e25771f582bb2c1bce567bc2abdf20fb114aba9972e",
    "signature": "0x8d07fcf2707b1e8c5959f58779775dd5b796309824f970a0372e6284c9ea81e1345c5d73d3c27a3b35bda06bf12a3c52b5587cd6591959ef4681629cdd4239451b",
    "signer": "0xEe3905136f4fF4281aE4d532C5B3c71d4C5E4cd0",
    "userId": "287318706"
  }
}