{
  "manageEntity": {
    "action": "Save",
    "entityId": "1105383709",
    "entityType": "Track",
    "nonce": "0xda7e180109174adafaf0dd6b782207b8d021810d47b2eafd32823056c262c386",
    "signature": "0x9465fcf327d0fe27b6506afa6f29a80ff475f74e080f724c12cd824d83b2f2e7243321ac8ca164c5dcb58b851d5ed0087b1dffcc522174095a485d0d73783d591c",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}