{
  "manageEntity": {
    "action": "Save",
    "entityId": "1222413148",
    "entityType": "Track",
    "nonce": "0x0c62baa67b93bb48478bad9031c4cbcabdb19be845a368309c6fd07f94b32dfb",
    "signature": "0x0bf28ebc3694a8450e0502fe170d4f89ea001b4dfcd2c4c11047442244fa565c137ac6b20736189759e2d2391ce65dc08ed9debb4f81a2fc26aac6c4af86e0e51b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}