{
  "manageEntity": {
    "action": "Save",
    "entityId": "1033193213",
    "entityType": "Track",
    "nonce": "0xb0f075ba2c4d88abf7f93a18947849155a34f671d2fbf2b008e0bbfc5fc6d32c",
    "signature": "0x0edd92f72bc32cf2b9f228b7651914691d3c4519ca9b464e582f00ffe9c6c2e9061efe9cda5ab6881621b322f6c3244b2ca1f6fa1ce6e477b7090b8a01120de71b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}