{
  "manageEntity": {
    "action": "Save",
    "entityId": "2105852401",
    "entityType": "Track",
    "nonce": "0xe2c43804831ae7044cd473147405d891bf1bed256a3d6f70f80b517618fb6889",
    "signature": "0x44041716e1146173a161586cd779b82eb88443175e8debe26208f1d5788916054c232eaefe05c8c4cc946b72bc1c358ec36fa8348c1427cbd64ef581a4de935c1c",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}