{
  "manageEntity": {
    "action": "Save",
    "entityId": "955981336",
    "entityType": "Track",
    "nonce": "0xbcf61728b693ea622dcce6a246277881119699feed5dfc422465d6d20760092e",
    "signature": "0x6e5896da7a9dfba943509c621e24423732f63e21f1bbf1e3d206c0961c716d5f3d35e8d6ce06ec80eead93a6a5315b6c04c70dcc337b03d47c11420ad05ab7001b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}