{
  "manageEntity": {
    "action": "Save",
    "entityId": "1917611770",
    "entityType": "Track",
    "nonce": "0xc6b55e04f4d34821ae883e8879d8743dd273c097b28921cfe1f8ca3886b47bbe",
    "signature": "0x77ef3bb19bd4e4b7d6d6f04196c8351a02e79b27aaf42a43fc0f5487e69489785631ab3c6af5c862d1b07582aba074d07fa98726ae73c9c41be6ddb5e38982671b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}