{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x22f076e0dab862245ed84f8fb64297dd77c74b185cc655012158da0e1aa833f7",
    "signature": "0x309b9010a27742e3d0b65ba6f8da509922df3e878d089e3c8e968336141725403eed85c3b6d281a02bd2a82bb48c8aef840c3cbdaf06f8d608e85dcfdca941a41b",
    "signer": "0x0A2e0a3FcF686Bb778cD7B9FA9C8E65A5c9b361C",
    "userId": "423072511"
  }
}