{
  "manageEntity": {
    "action": "Save",
    "entityId": "1067336",
    "entityType": "Track",
    "nonce": "0x3e7eeebf98bfaccfc2a6592413d011f328fe585d9f3b15eaba06cea0187d817a",
    "signature": "0x2b43ac7110803828fd408a8cd5fb4df1944f595d668db88e25b0195f32b1cded7713da319073930d483e4966f9cd2278f4423a4a9f51e988be4f2c400709f0741c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}