{
  "manageEntity": {
    "action": "Save",
    "entityId": "1761981116",
    "entityType": "Track",
    "nonce": "0xa5b6ea7e9021a8775283b05ee42133828cbd40d3b9d5e9c26963a51887fb3bc8",
    "signature": "0xe53ddd9034e7121889c9de6a43b4784ffa092e1b3c271cab8118188e2dd607f157423da36b44e674a89cf028ac800bffc6171129d6e4ac3c8869f85ea719e29e1b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}