{
  "manageEntity": {
    "action": "Save",
    "entityId": "910583006",
    "entityType": "Track",
    "nonce": "0x76fc9f102d9987d3b2642eef61819c2e674115815a852df47010bec9ef784637",
    "signature": "0x9538f96397ef0457b8a80cf4591d24d7c1e303268599161d9f26c32f652963906c7a7418c4eeb7bc876e3265c219f22164fd9d6ed37e6e3ce65289ddc1ae03b61b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}