{
  "manageEntity": {
    "action": "Save",
    "entityId": "183592415",
    "entityType": "Track",
    "nonce": "0x551d749f29a2a65cf6096f01edce9bb9cdd8bb91869c2764237f531313e22079",
    "signature": "0x9f79dde470b4c9e66713f3484aa4cbb27228a3d411d19552e430e6f20602250f345a69a4366daeebd55f68f2eb9d1465b735d08696d66b4be3369370854d1ce81c",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}