{
  "manageEntity": {
    "action": "Save",
    "entityId": "178118168",
    "entityType": "Track",
    "nonce": "0x083f6ac25ff829d3a1672e2277ba4230a2466be481277df53ecaaa43509037c7",
    "signature": "0x8cad6fc9d7d0a78af1e7698e4d997e1422cac2752c295364fd0f815e410d26e34a47c586896339f7556288c7830b478996a9d03004152c50d890ca3ed82b3dc91b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}