{
  "manageEntity": {
    "action": "Save",
    "entityId": "61042406",
    "entityType": "Track",
    "nonce": "0xd835de4798f92ff0124eae1890575cfe83540def410dafe557617709e2a5ecf6",
    "signature": "0xcb69987825878cbacf7e82527b55ff44e858056bc92bdbfe4ee02f93d4142f8e6deaab88ebf9077f3c76974ce11da7b16ea7644438ec3c660a0c043dd9fd49ab1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}