{
  "manageEntity": {
    "action": "Save",
    "entityId": "1152589192",
    "entityType": "Track",
    "nonce": "0x23fd347ec02a0e40eaaa2e2ede69ae3ca230aff2f7e2353c80f335bc9c51e682",
    "signature": "0xfb49f26f6373659c9b27555043d7fd9b3cbf8acf5bf91fe3a6c1d1e4b4831ca7708b0dc1b32ba2ed97c6aa180c93843f5a2ab78c9dea991c2093e2421399a34d1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}