{
  "manageEntity": {
    "action": "Save",
    "entityId": "1530279707",
    "entityType": "Track",
    "nonce": "0x7261b04ba0d632bc8c122ec70d96ceabaacd8f5d1f214566fbd99cda9d04f476",
    "signature": "0x9a2c0f73694364d2a638510f78f16656ce68acb5f5f2e7a4caa5a411513c4bcb17b95cbe051a4775175e5b15f9d2afa7332c363333983d70a59bd3e43c47e03c1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}