{
  "manageEntity": {
    "action": "Save",
    "entityId": "626862",
    "entityType": "Track",
    "nonce": "0x23a360b7d0befa707eef1608941aacc9db9614c10240ccf873f4002b21314084",
    "signature": "0x9d0623113044eac13f10b8241cea8a67e0c95469e6fc3e91b5d48eed4e89ffcd5617d3df46d5c8d62a13b180fa01f0da0b8e865b151d31989edc31540f66dd121b",
    "signer": "0xa8E11aa224d2579f5cbdb912866bCE84Eb10f9dD",
    "userId": "951616224"
  }
}