{
  "manageEntity": {
    "action": "Save",
    "entityId": "1768744425",
    "entityType": "Track",
    "nonce": "0xccf1f97f76cdfca57e8b391d82b209e1042c9705262925abb8d07c458506d826",
    "signature": "0xdb5952c53f203e22139e555386d63b2138c891a29472940dbba2e4d8cf76f89568cae524a5d9f4babeb143079fbf8964c190abd459d0c3120937635bce3939fa1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}