{
  "manageEntity": {
    "action": "Save",
    "entityId": "1269017184",
    "entityType": "Track",
    "nonce": "0x4e9b25015a71c0dc69aeda9e0332e248f1ce91f7e89a19ebe278338af11ac954",
    "signature": "0x615041c5d18f57aad65a1b527918a065358c3ab14a103dce987075748168fd0f1d1cba5fb085960c710bb20c4d82de0c068a52e548f121f21bae18c3db5c83791c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}