{
  "manageEntity": {
    "action": "Save",
    "entityId": "1781420165",
    "entityType": "Track",
    "nonce": "0x05f5e2e85a21af3e517dfae0f1df9b0e583e5cd09c1f513e39498eebd780f99d",
    "signature": "0x2f34c236a1e3053af98e174da80ddec6d77ab7083e2eb2f8d487421bd1ca52730dfb941216fcd6939b24fe653e0e80d711a17f534ab59ce7f288e4c026fad6401c",
    "signer": "0xC041f26f283EAf5F5C78Ab3694f6517cd2d3a1F7",
    "userId": "93075"
  }
}