{
  "manageEntity": {
    "action": "Save",
    "entityId": "118564682",
    "entityType": "Track",
    "nonce": "0x69a23a95ee29b51577233d97653ad456a1cb407ac6999ccbfa9addc92b89ad00",
    "signature": "0x4983d2e9f52eb52d119124464b211c501c96ac1732243bbac0b1e564658c2ac024afef472fa07bdb76b96fc39f60ea980eebb0bab73357473804ae849501eb351c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}