{
  "manageEntity": {
    "action": "Save",
    "entityId": "2088230416",
    "entityType": "Track",
    "nonce": "0x0d5041974e5bc141472afb0a5e3a31aaeeb118aafb28febd4cc4348153ada8fd",
    "signature": "0x6161e411c29f1d14dbe5f3d38e5992d854e09af454c2f2c3628b503d50bb87fd6d7312e71c62ba0fda85f6be02f5020e02774e344278fe82f551c87dbcdc42571b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}