{
  "manageEntity": {
    "action": "Save",
    "entityId": "1122510711",
    "entityType": "Track",
    "nonce": "0xd56cc15b683889c6c1e222f044f2068e3ba3d51f1d6e82b96093f8d1bf827893",
    "signature": "0x3083d5ad000ceb8e5aa3861e952ec1b401b70ce1c766b87754b6bc7e3c6a347865c265defc2da577aad09ecca6308af8815de999a86c00c07a8cf1d95b31a13f1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}