{
  "manageEntity": {
    "action": "Save",
    "entityId": "1924941477",
    "entityType": "Track",
    "nonce": "0xec1ac0cd464445935f6365c081aed368d4d12cac3cb1f4e3cfaa5cf9785cac16",
    "signature": "0x2e8a4523d55bb892bb1e98a8164d0cdfee82e1d2186cfb04133d4ce1abe8934f218f6a8c685be28eae612a752b5618b7c60bdfad629a59e68409fcb5a7c060dc1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}