{
  "manageEntity": {
    "action": "Save",
    "entityId": "2004881562",
    "entityType": "Track",
    "nonce": "0xe58be58a7cc649cf38eb63cf6f1a1ae4d28bae1c1b72fef740c8f1f2fd8339dc",
    "signature": "0xa2431b99bf50737b849399162a072a6be0a6d6fb08b9a3d264dcce54301314cf3be401bb466367ec2b484fed8140ce8dd4847f0bff0e64bb37d3602ef0cbb66e1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}