{
  "manageEntity": {
    "action": "Save",
    "entityId": "72692",
    "entityType": "Track",
    "nonce": "0x6b2f5ba694427a82ed1f8018b2d5f2ca120dba09ff767be119c0f32e2396f2e0",
    "signature": "0x9861055ccb1d08e1dd8fa60c60e4e9febfb18ab4cf7fc3fc19328ff124db54c929ff2791d2005a1dc6fe810d7f37b8ddd72672f4b77564eabebcde57c0a970f21c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}