{
  "manageEntity": {
    "action": "Save",
    "entityId": "31207",
    "entityType": "Track",
    "nonce": "0x539cdd41af3e7b02286454c19e4d9052dd009988041d6565ebc96bee0f34b4c5",
    "signature": "0xd5a5a24c8be079443d69f444e302fc8c2bd806f04cb2f7c09c2e14450297ab3f1875c24f254165819626cccec1692d9448b973d32f00d74c0232ed7e1685572e1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}