{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdf8aca0722fa4cad236f2ae37fd0e9579e7beef90f71d2c2d6241e037419d1e5",
    "signature": "0xf6b02f5a7276ef1b24729fc39d5e29b165eaf6f8722a32085df07df8ade639933b230315440da159051f73b07efa224c5f9b0f0625e4978d793242ca9024235b1b",
    "signer": "0xaab2463FC6fF94e19f24948c11C06A1C240639F3",
    "userId": "293364146"
  }
}