{
  "manageEntity": {
    "action": "Save",
    "entityId": "1820116420",
    "entityType": "Track",
    "nonce": "0xf14cc5b7679c93eeb2e7ea59aafefd26c0c8a79b5ff9801bd3904c071bf5b0a2",
    "signature": "0x6127839556dba132cb358e7cf97029e6cf1798786a148c26f7af863b2762b9a440f81e665ed8519ea5bbfa4725f7825f4a27d10c193f368d213ef444951469d21c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}