{
  "manageEntity": {
    "action": "Save",
    "entityId": "1052677",
    "entityType": "Track",
    "nonce": "0x23d24b76ed0dcf3f8ec89b2826bee9baaf51348f5be8882acdc40ea1c20f6f12",
    "signature": "0x71781ebfe4a921eca822c30a43f9a73b4f7e2154fc060d810f5366e90028edee4b64b8d60700f03e667e5ebdcb25ca231f714872558d6b2ce42f715d1052293a1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}