{
  "manageEntity": {
    "action": "Save",
    "entityId": "1048773202",
    "entityType": "Track",
    "nonce": "0xc8afa1c2d914ec4e62786d2e70cb5580e5caeebc8217b4ffbb0b71ae4c60d648",
    "signature": "0x483bd6d828386d8ee787cacb8802c9cf42eb2e2cd5adb7c8aaf220c4e6ad2a93088fcb3ad7763823e83e4c970cfc6d04b8e3866e19e748419c52bd15dfbae87b1c",
    "signer": "0x48997477d821e30d3Fa835d1Ee7809B3253Cb100",
    "userId": "75085"
  }
}