{
  "manageEntity": {
    "action": "Save",
    "entityId": "2063841957",
    "entityType": "Track",
    "nonce": "0x4d35d67fd5bef48ba10b10a7d78504645d878c4c830a64850584be29c1b93aa0",
    "signature": "0x6b2d2dedf08e64d7f164555d3d1a2c3de1f1294b4836125893686c5859ffa22b208c84d28a477a0ce74249c18c949e5a8261463d7b14853755c814fec0c548611b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}