{
  "manageEntity": {
    "action": "Save",
    "entityId": "1009196224",
    "entityType": "Track",
    "nonce": "0x4b463a7b578897f8e9442eb1ef22391bed893d8ef8d9b0235fdc825c58157d0f",
    "signature": "0x9060d8e0e80123882d073269af1ab32a0e2a10eef0916364618548e89d5c8d8c5fa4b2d829c8c5436bc6084dfea9c500da6f9a23701e0f334372a786206921531b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}