{
  "manageEntity": {
    "action": "Save",
    "entityId": "1753608208",
    "entityType": "Track",
    "nonce": "0xc0bfcb644727594bc878c921a82f44be40108942c439fff3fd11ba5409af9085",
    "signature": "0xebb5fd10c9f7830ef2d6c628da5d96ae7a7fd78f98c4faeebcc153c1cf50ba723745fff2de3d7fc63b1b6eff7b66d5d0995f3841857bf3b2a059c2aabae127741c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}