{
  "manageEntity": {
    "action": "Save",
    "entityId": "7482956",
    "entityType": "Track",
    "nonce": "0xf037185a6a601170d53979004987160fc746f8aa38265722eda86e4d6e006db0",
    "signature": "0x05d62cd6c76295866cc559474903d3a7cd875d41330444d4d2036c85f85cecab727e659efc2b7556ae05b5647e0dadef3f678f8440585df28adc0290a9d69b531c",
    "signer": "0x5D012C880480A2E1ab4345f6F374CFf73e040331",
    "userId": "10449019"
  }
}