{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7bfa40b79a87481718528a641e6f1e07d10661cecc581a5192b10f9e3cdfe96a",
    "signature": "0x72d16f97be2e804e694aa68568b81786cbaba76a9ae5ce13af6a78c7f36f375d3855fb3cb2d6c9ba7719fd83d814a176128637a3ee8e039e35625b489dc8a63f1c",
    "signer": "0xd52755aE67F1405b71b8e9514ec9cbB5C2098F87",
    "userId": "758707622"
  }
}