{
  "manageEntity": {
    "action": "Save",
    "entityId": "1078688844",
    "entityType": "Track",
    "nonce": "0xa22a35c5bf13bb4a3c3607667bdb753f1f5875bdf077fc82da3e189f696bdf13",
    "signature": "0x2c4ee4a2807fd4830158ff62b87d09dc6c5611cb8b2475a8180636610fab89192bbbb104b3bfdbf491be3e3f06fee8a271a2d1c02ee478a80e9779d28784f98c1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}