{
  "manageEntity": {
    "action": "Save",
    "entityId": "171194",
    "entityType": "Track",
    "nonce": "0x0945547ab27ee31d3c06e7a5a0c02304fb23930da7f21483489eb20b934bb909",
    "signature": "0xeaf4a39b06d4b6bf9d72cc810d5ba59fa7f6c767bbdacfd707ada90fa9da10c86fb99099cc272951a5b225a4f9a618f30e4fdea33b5cdbbd820089b04e1f75091b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}