{
  "manageEntity": {
    "action": "Save",
    "entityId": "1217202133",
    "entityType": "Track",
    "nonce": "0xdbdd5290fa055016f73a9acd7b76216d811776cc51c307055268c25d4a8a64f0",
    "signature": "0x21433fe4f302d1a4610c02a31dae801689fbcf426d31446f31e313c7bb47b1367fbc6ae735c4f9735feab663cd917449f89d8a5a1a3436f3a5fb8b578d8f09321b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}