{
  "manageEntity": {
    "action": "Save",
    "entityId": "1087645",
    "entityType": "Track",
    "nonce": "0xab8a177b0765f41980fa33e331611ad10b2c97b3fe254bdd9f0c31fb0f93272e",
    "signature": "0x4d2c1c1e06eb30d42d5a71001508f3127e08e41cd3f4471d5c838e6c932ee66e170e41edd656a97a95895fd433b200a4bbef4884483860dcf04064ae73ca37a81c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}