{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9779d60f5a23a6ac946862fc1928bfae9049ba36bec7f80acce0bd94a0547b20",
    "signature": "0xf24ca32ab231391a067789f9871c900ae82cd220eb3eb75c8d08f3c3c12ddfcc5a36e762facbd2354951cfd5e942e10b529c364bbec5165d8a966e0d978887f81b",
    "signer": "0x801cFd101977829e8D371a77d53FB980b2BA75f4",
    "userId": "611862968"
  }
}