{
  "manageEntity": {
    "action": "Save",
    "entityId": "1374772628",
    "entityType": "Track",
    "nonce": "0x842563f4ccdefa3e7ef0521e542e5d668cff8371e02128e15e179c45ae8ad13c",
    "signature": "0xd029c6c7f077d9b5e8bdeeb0ccb83bd8d296f381e55a86c4bf99dd01e4cc230a10d2474f033394ab1e6ad5b1818522a16c940ba4c33d1b7ae2dda7706b518f491c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}